Remove scripts for old slippy map which are no longer used.
authorTom Hughes <tom@compton.nu>
Sat, 30 Jun 2007 16:30:28 +0000 (16:30 +0000)
committerTom Hughes <tom@compton.nu>
Sat, 30 Jun 2007 16:30:28 +0000 (16:30 +0000)
public/javascripts/main.js [deleted file]
public/javascripts/tile.js [deleted file]

diff --git a/public/javascripts/main.js b/public/javascripts/main.js
deleted file mode 100644 (file)
index fc888d4..0000000
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
-    Copyright (C) 2004-05 Nick Whitelegg, Hogweed Software, nick@hogweed.org 
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the Lesser GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    Lesser GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111 USA
-
-*/
-
-// These are functions which manipulate the slippy map in various ways
-// The idea has been to try and clean up the slippy map API and take code
-// which does not manipulate it directly outside.
-
-var view=0, tileURL, tile_engine; 
-
-function init()
-{
-       tileURL = 'http://tile.openstreetmap.org/ruby/wmsmod.rbx';
-       tile_engine = new tile_engine_new('drag','FULL','',tileURL,lon,lat,zoom,700,500);
-
-       tile_engine.setURLAttribute("landsat",1);
-
-       document.getElementById('zoomout').onclick = zoomOut;
-       document.getElementById('zoomin').onclick = zoomIn;
-       /*
-       document.getElementById('landsat').onclick = landsatToggle;
-       */
-
-       //document.getElementById('posGo').onclick = setPosition;
-}
-
-function zoomIn()
-{
-       tile_engine.tile_engine_zoomin();
-}
-
-function zoomOut()
-{
-       tile_engine.tile_engine_zoomout();
-}
-
-function enableTileEngine()
-{
-       tile_engine.event_catch();
-}
-
-function landsatToggle()
-{
-       var lsat = tile_engine.getURLAttribute("landsat");
-       tile_engine.setURLAttribute("landsat", (lsat) ? 0: 1);
-       tile_engine.forceRefresh();
-}
-
-function setPosition()
-{
-       /*
-       var txtLat = document.getElementById("txtLat"),
-               txtLon = document.getElementById("txtLon");
-
-       tile_engine.setLatLon(txtLat, txtLon);
-       */
-}
diff --git a/public/javascripts/tile.js b/public/javascripts/tile.js
deleted file mode 100644 (file)
index 069767d..0000000
+++ /dev/null
@@ -1,889 +0,0 @@
-// June 20th 2005 http://civicactions.net anselm@hook.org public domain version 0.5
-
-//
-// miscellaneous
-//
-
-var netscape = ( document.getElementById && !document.all ) || document.layers;
-var defaultEngine = null; // xxx for firefox keyboard events.
-
-var PI = 3.14159265358979323846;
-
-var lat_range = PI, lon_range = PI;
-
-//
-// Utility - get div position - may not be accurate
-//
-
-function getCSSPositionX(parent) 
-{
-    var offset = parent.x ? parseInt(parent.x) : 0;
-    offset += parent.style.left ? parseInt(parent.style.left) : 0;
-    for(var node = parent; node ; node = node.offsetParent ) 
-       { 
-               offset += node.offsetLeft; 
-       }
-    return offset;
-}
-
-function getCSSPositionY(parent) 
-{
-    var offset = parent.y ? parseInt(parent.y) : 0;
-    offset += parent.style.top ? parseInt(parent.style.top) : 0;
-    for(var node = parent; node ; node = node.offsetParent ) 
-       { 
-               offset += node.offsetTop; 
-       }
-    return offset;
-}
-
-///
-/// initialize a new tile engine object
-/// usage: var engine = new tile_engine_new(parentdiv,stylehints,wmssource,lon,lat,zoom,optional width, optional height)
-///
-function tile_engine_new(parentname,hints,feedurl,url,lon,lat,zoom,w,h) 
-{
-    // NW geocoder removed for now
-
-       this.timestamp = new Date().getTime();
-       this.urlAttr = new Array();
-
-    // NW Removed navigation buttons entirely for flexibility    
-
-    this.lonPerPixel = function()
-            { return (this.lon_quant/this.scale)/this.tilewidth; }
-
-    this.latPerPixel = function()
-            { return (this.lat_quant/this.scale)/this.tileheight; }
-
-    this.xToLon = function(x)
-            { return this.lon + (x-this.thewidth/2)*this.lonPerPixel(); } 
-
-    this.yToLat = function(y)
-            { return normallat(this.lat - (y-this.theheight/2)
-                                *this.latPerPixel()); } 
-
-       this.lonToX = function (lon)
-                       { return ((lon-this.lon)/this.lonPerPixel()) + this.thewidth/2;}
-
-       this.latToY = function(lat)
-                       { return ((this.lat-mercatorlat(lat))/this.latPerPixel()) + 
-                                                       this.theheight/2; }
-
-
-    //
-    // it is possible that this collection is already in use - clean it
-    //
-    this.clean = function() 
-    { 
-               /*
-        while( this.parent.hasChildNodes() ) 
-            this.parent.removeChild( this.parent.firstChild );
-                       */
-
-               for(var ct=0; ct<this.parent.childNodes.length; ct++)
-               {
-                       if(this.parent.childNodes[ct].id != "controls")
-                               this.parent.removeChild(this.parent.childNodes[ct]);
-               }
-
-        //
-        // build inner tile container for theoretical speed improvement?
-        // center in parent for simplicity of math
-        // size of inner container is irrelevant since overflow is enabled
-        //
-
-        if( this.dragcontainer ) 
-        {
-            this.tiles = document.createElement('div');
-            this.tiles.style.position = 'absolute';
-            this.tiles.style.left = this.displaywidth/2 + 'px';
-            this.tiles.style.top = this.displayheight/2 + 'px';
-            this.tiles.style.width = '16px';
-            this.tiles.style.height = '16px';
-            if( this.debug ) 
-            {
-                this.tiles.style.border = 'dashed green 1px';
-            }
-            this.tiles.tile_engine = this;
-            this.parent.appendChild(this.tiles);
-
-        } 
-        else 
-        {
-            this.tiles = this.parent;
-        }
-    }
-
-    /// focus over specified lon/lat and zoom
-    /// user should call this.drag(0,0) after this to force an initial refresh
-    ///
-
-    this.performzoom = function(lon,lat,z) 
-    {
-        // setup for zoom
-        // this engine operates at * scale to try avoid tile errors thrashing 
-        // server cache
-        
-        this.scale = 1000000;
-        this.lon_min_clamp = -180 * this.scale;
-        this.lon_max_clamp = 180 * this.scale;
-        this.lat_min_clamp = -180 * this.scale; //t
-        this.lat_max_clamp = 180 * this.scale; //t
-        this.lon_start_tile = 180 * this.scale;
-        this.lat_start_tile = 90 * this.scale; //t
-        this.zoom_power = 2;
-        this.lon_quant = this.lon_start_tile;
-        this.lat_quant = this.lat_start_tile;
-        this.lon = lon;
-        this.lat = lat;
-
-        // operational lat - = lat due to quirks in our engine and quirks in o
-        // lon/lat design
-        lat = -lat;
-
-        // divide tile size until reach requested zoom
-        // trying to guarantee consistency so as to not thrash the server side tile cache
-        while(z > 0) 
-        {
-            this.lon_quant = this.lon_quant / this.zoom_power;
-            this.lat_quant = this.lat_quant / this.zoom_power;
-            z--;
-        }
-        this.lon_quant = Math.round( this.lon_quant );
-        this.lat_quant = Math.round( this.lat_quant );
-    
-        // get user requested exact lon/lat
-        this.lon_scaled = Math.round( lon * this.scale );
-        this.lat_scaled = Math.round( lat * this.scale );
-    
-
-
-        // convert requested exact lon/lat to quantized lon lat (rounding down 
-        // or up as best suits)
-        this.lon_round = Math.round( this.lon_scaled / this.lon_quant ) * 
-                this.lon_quant;
-        this.lat_round = Math.round( this.lat_scaled / this.lat_quant ) * 
-                this.lat_quant;
-    
-        //alert('lon_round=' + this.lon_round+ ' lat_round='+this.lat_round);
-
-        // calculate world extents [ this is the span of all tiles in lon/lat ]
-        this.lon_min = this.lon_round - this.lon_quant;
-        this.lon_max = this.lon_round + this.lon_quant;
-        this.lat_min = this.lat_round - this.lat_quant;
-        this.lat_max = this.lat_round + this.lat_quant;
-    
-        // set tiled region details [ this is the span of all tiles in pixels ]
-        this.centerx = 0;
-        this.centery = 0;
-        this.tilewidth = 256;
-        this.tileheight = 128;
-        this.left = -this.tilewidth;
-        this.right = this.tilewidth;
-        this.top = -this.tileheight;
-        this.bot = this.tileheight;
-
-
-        // adjust the current center position slightly to reflect exact lat/lon
-        // not rounded
-        this.centerx -= (this.lon_scaled-this.lon_round)/
-            (this.lon_max-this.lon_min)*(this.right-this.left);
-        this.centery -= (this.lat_scaled-this.lat_round)/
-            (this.lat_max-this.lat_min)*(this.bot-this.top);
-    }
-
-       this.update_perma_link = function() {
-               // because we're using mercator
-               updatelinks(this.lon,normallat(this.lat),this.zoom);
-       }
-
-    ///
-    /// draw the spanning lon/lat range
-    /// drag is simply the mouse delta in pixels
-    ///
-
-    this.drag = function(dragx,dragy) 
-    {
-               var fred=true;
-
-        // move the drag offset
-        this.centerx += dragx;
-        this.centery += dragy;
-
-        // update where we think the user is actually focused
-        this.lon = ( this.lon_round - ( this.lon_max - this.lon_min ) / 
-            ( this.right - this.left ) * this.centerx ) / this.scale;
-        this.lat = - ( this.lat_round - ( this.lat_max - this.lat_min ) / 
-            ( this.bot - this.top ) * this.centery ) / this.scale;
-
-               this.update_perma_link();
-
-        // show it
-        var helper = this.navhelp; 
-
-         // extend exposed sections
-        var dirty = false;
-        while( this.left + this.centerx > -this.displaywidth/2 && 
-                this.lon_min > this.lon_min_clamp ) 
-        {
-            this.left -= this.tilewidth;
-            this.lon_min -= this.lon_quant;
-            dirty = true;
-        }
-        while( this.right + this.centerx < this.displaywidth/2 && 
-                this.lon_max < this.lon_max_clamp ) 
-        {
-            this.right += this.tilewidth;
-            this.lon_max += this.lon_quant;
-            dirty = true;
-        }
-        while( this.top + this.centery > -this.displayheight/2 && 
-        this.lat_min > this.lat_min_clamp ) 
-        {
-            this.top -= this.tileheight;
-            this.lat_min -= this.lat_quant;
-            dirty = true;
-        }
-
-        while( this.bot + this.centery < this.displayheight/2 && 
-        this.lat_max < this.lat_max_clamp ) 
-        {
-            this.bot += this.tileheight;
-            this.lat_max += this.lat_quant;
-            dirty = true;
-        }
-
-
-        // prepare to walk the container and assure that all nodes are correct
-        var containerx;
-        var containery;
-
-        // in drag container mode we do not have to move the children all the 
-        // time
-        if( this.dragcontainer ) 
-        {
-            this.tiles.style.left = this.displaywidth / 2 + this.centerx + 'px';
-            this.tiles.style.top = this.displayheight / 2 + this.centery + 'px';
-            if( !dirty && this.tiles.hasChildNodes() ) 
-            {
-                return;
-            }
-            containerx = this.left;
-            containery = this.top;
-        } 
-        else 
-        {
-            containerx = this.left + this.centerx;
-            containery = this.top + this.centery;
-        }
-
-        // walk all tiles and repair as needed
-        // xxx one bug is that it walks the _entire_ width and height... 
-        // not just visible.
-        // xxx this makes cleanup harder and perhaps a bitmap is better
-
-        var removehidden = 1;
-        var removecolumn = 0;
-        var removerow = 0;
-        var containeryreset = containery;
-
-        for( var x = this.lon_min; x < this.lon_max ; x+= this.lon_quant ) 
-        {
-            // will this row be visible in the next round?
-            if( removehidden ) 
-            {
-                var rx = containerx + this.centerx;
-                if( rx > this.displaywidth / 2 ) 
-                {
-                    removerow = 1;
-                    // ideally i would truncate max width here
-                } 
-                else if( rx + this.tilewidth < - this.displaywidth / 2 ) 
-                {
-                    removerow = 1;
-                } 
-                else 
-                {
-                    removerow = 0;
-                }
-            }
-
-            for( var y = this.lat_min; y < this.lat_max ; y+= this.lat_quant ) 
-            {
-                // is this column visible?
-                if( removehidden ) 
-                {
-                    var ry = containery + this.centery;
-                    if( ry > this.displayheight / 2 ) 
-                    {
-                        removecolumn = 1;
-                    } 
-                    else if( ry + this.tileheight < - this.displayheight/2) 
-                    {
-                        removecolumn = 1;
-                    } 
-                    else 
-                    {
-                        removecolumn = 0;
-                    }
-                }
-
-                // convert to WMS compliant coordinate system
-                var lt = x / this.scale;
-                var rt = lt + this.lon_quant / this.scale;
-                var tp = y / this.scale;
-                var bt = tp + this.lat_quant / this.scale;
-                var temp = bt;
-                var bt = -tp;
-                var tp = -temp;
-
-                // modify for mercator-projected tiles: 
-                tp = 180/PI * (2 * Math.atan(Math.exp(tp * PI / 180)) - PI / 2);
-                bt = 180/PI * (2 * Math.atan(Math.exp(bt * PI / 180)) - PI / 2);
-                
-                // make a key
-                var key = this.url + "?WIDTH="+(this.tilewidth)+"&HEIGHT="+
-                    (this.tileheight)+"&BBOX="+lt+","+tp+","+rt+","+bt;
-
-                // see if our tile is already present
-                var node = document.getElementById(key);
-
-                // create if not present
-                if(!node) 
-                {
-                    if( this.debug > 0) 
-                    {
-                        node = document.createElement('div');
-                    } 
-                    else 
-                    {
-                        node = document.createElement('img');
-                    }
-                    node.id = key;
-                    node.className = 'tile';
-                    node.style.position = 'absolute';
-                    node.style.width = this.tilewidth + 'px';
-                    node.style.height = this.tileheight + 'px';
-                    node.style.left = containerx + 'px';
-                    node.style.top = containery + 'px';
-                    node.style.zIndex = 10; // to appear under the rss elements
-                    node.tile_engine = this;
-                    if( this.debug > 0) 
-                    {
-                        node.style.border = "1px solid yellow";
-                        node.innerHTML = key;
-                        if( this.debug > 1 ) 
-                        {
-                            var img = document.createElement('img');
-                            img.src = key;
-                            node.appendChild(img);
-                        }
-                    }
-
-                    var goURL = key + "&zoom=" + this.zoom; 
-                                                       
-                                   for(var k in this.urlAttr) 
-                                       {
-                                               goURL += "&"+k+"="+this.urlAttr[k];
-                                       }
-                               
-                                       node.src = goURL;
-
-                    node.alt = "loading tile..";
-                    node.style.color = "#ffffff";
-                    this.tiles.appendChild(node);
-                }
-                // adjust if using active style
-                else if( !this.dragcontainer ) {
-                    node.style.left = containerx + 'px';
-                    node.style.top = containery + 'px';
-                }
-
-                containery += this.tileheight;
-            }
-            containery = containeryreset;
-            containerx += this.tilewidth;
-        }
-    }
-
-    this.zoomTo = function(zoom) 
-    {
-
-        this.zoom  = zoom;
-    
-        if (this.zoom < this.minzoom) { this.zoom = this.minzoom; }
-        if (this.zoom > this.maxzoom) { this.zoom = this.maxzoom; }
-
-
-
-
-        ///
-        /// immediately draw and or fit to feed
-        ///
-        this.performzoom(this.lon,this.lat,zoom);
-        this.drag(0,0);
-
-        ///
-    } // CLOSE ZOOM FUNCTION
-
-    this.setLatLon = function(lat,lon)
-    { 
-        this.lon=lon; 
-        this.lat=mercatorlat(lat); 
-        this.clean(); 
-        this.performzoom(lon,mercatorlat(lat),this.zoom);
-        this.drag(0,0); 
-    }
-
-       this.forceRefresh = function()
-       {
-               this.clean();
-        this.performzoom(this.lon,this.lat,this.zoom);
-        this.drag(0,0); 
-       }
-
-    ///
-    /// zoom a tile group
-    ///
-    this.tile_engine_zoomout = function() 
-    {
-        this.clean();
-        this.zoomTo(this.zoom-1);
-
-        return false; // or safari falls over
-    }
-
-    ///
-    /// zoom a tile group
-    ///
-    this.tile_engine_zoomin = function() 
-    {
-        
-        this.clean();
-        this.zoomTo(this.zoom+1);
-  
-        return false; // or safari falls over
-    }
-
-    this.setURL=function(url) { this.url=url; }
-
-
-
-    ///
-    /// intercept context events to minimize out-of-browser interruptions
-    ///
-    
-    this.event_context = function(e) 
-    {
-        return false;
-    }
-
-    ///
-    /// keys
-    ///
-
-    this.event_key = function(e) 
-    {
-        var key = 0;        
-
-        var hostengine = defaultEngine;
-
-        if( window && window.event && window.event.srcElement ) {
-            hostengine = window.event.srcElement.tile_engine;
-        } else if( e.target ) {
-            hostengine = e.target.tile_engine;
-        } else if( e.srcElement ) {
-            hostengine = e.srcElement.tile_engine;
-        }
-
-        if( hostengine == null ) {
-            hostengine = defaultEngine;
-            if( hostengine == null ) {
-                return;
-            }
-        }
-
-
-        if( e == null && document.all ) {
-            e = window.event;
-        }
-
-        if( e ) {
-            if( e.keyCode ) {
-                key = e.keyCode;
-            }
-            else if( e.which ) {
-                key = e.which;
-            }
-
-            switch(key) {
-            case 97: // a = left
-                hostengine.drag(16,0);
-                break;
-            case 100: // d = right
-                hostengine.drag(-16,0);
-                break;
-            case 119: // w = up
-                hostengine.drag(0,16);
-                break;
-            case 120: // x = dn
-                hostengine.drag(0,-16);
-                break;
-            case 115: // s = center
-                new tile_engine_new(hostengine.parentname,
-                            "FULL",
-                            hostengine.feedurl, // xxx hrm, cache this?
-                            hostengine.url,
-                            hostengine.lon,
-                            hostengine.lat,
-                            hostengine.zoom,
-                            0,0
-                            );
-                break;
-            case 122: // z = zoom
-                new tile_engine_new(hostengine.parentname,
-                            "FULL",
-                            hostengine.feedurl, // xxx hrm, cache this?
-                            hostengine.url,
-                            hostengine.lon,
-                            hostengine.lat,
-                            hostengine.zoom + 1,
-                            0,0
-                            );
-                break;
-            case  99: // c = unzoom
-                new tile_engine_new(hostengine.parentname,
-                            "FULL",
-                            hostengine.feedurl, // xxx hrm, cache this?
-                            hostengine.url,
-                            hostengine.lon,
-                            hostengine.lat,
-                            hostengine.zoom - 1,
-                            0,0
-                            );
-                break;
-            }
-        }    
-    }
-
-    ///
-    /// catch mouse move events
-    /// this routine _must_ return false or else the operating system outside-of-browser-scope drag and drop handler will interfere
-    ///
-
-    this.event_mouse_move = function(e) {
-
-        var hostengine = null;
-        if( window && window.event && window.event.srcElement ) {
-            hostengine = window.event.srcElement.tile_engine;
-        } else if( e.target ) {
-            hostengine = e.target.tile_engine;
-        } else if( e.srcElement ) {
-            hostengine = e.srcElement.tile_engine;
-        }
-
-
-        if( hostengine && hostengine.drag ) {
-            if( hostengine.mousedown ) {
-                if( netscape ) {
-                    hostengine.mousex = parseInt(e.pageX) + 0.0;
-                    hostengine.mousey = parseInt(e.pageY) + 0.0;
-                } else {
-                    hostengine.mousex = parseInt(window.event.clientX) + 0.0;
-                    hostengine.mousey = parseInt(window.event.clientY) + 0.0;
-                }
-                hostengine.drag(hostengine.mousex-hostengine.lastmousex,hostengine.mousey-hostengine.lastmousey);
-            }
-            hostengine.lastmousex = hostengine.mousex;
-            hostengine.lastmousey = hostengine.mousey;
-        }
-
-        // must return false to prevent operating system drag and drop from handling events
-        return false;
-    }
-
-    ///
-    /// catch mouse down
-    ///
-
-    this.event_mouse_down = function(e) {
-
-        var hostengine = null;
-        if( window && window.event && window.event.srcElement ) {
-            hostengine = window.event.srcElement.tile_engine;
-        } else if( e.target ) {
-            hostengine = e.target.tile_engine;
-        } else if( e.srcElement ) {
-            hostengine = e.srcElement.tile_engine;
-        }
-
-
-        if( hostengine ) {
-            if( netscape ) {
-                hostengine.mousex = parseInt(e.pageX) + 0.0;
-                hostengine.mousey = parseInt(e.pageY) + 0.0;
-            } else {
-                hostengine.mousex = parseInt(window.event.clientX) + 0.0;
-                hostengine.mousey = parseInt(window.event.clientY) + 0.0;
-            }
-            hostengine.lastmousex = hostengine.mousex;
-            hostengine.lastmousey = hostengine.mousey;
-            hostengine.mousedown = 1;
-        }
-
-        // must return false to prevent operating system drag and drop from handling events
-        return false;
-    }
-
-    ///
-    /// catch double click (use to center map)
-    ///
-
-    this.event_double_click = function(e) {
-
-        var hostengine = null;
-        if( window && window.event && window.event.srcElement ) {
-            hostengine = window.event.srcElement.tile_engine;
-        } else if( e.target ) {
-            hostengine = e.target.tile_engine;
-        } else if( e.srcElement ) {
-            hostengine = e.srcElement.tile_engine;
-        }
-
-
-        if( hostengine ) {
-            if( netscape ) {
-                hostengine.mousex = parseInt(e.pageX) + 0.0;
-                hostengine.mousey = parseInt(e.pageY) + 0.0;
-            } else {
-                hostengine.mousex = parseInt(window.event.clientX) + 0.0;
-                hostengine.mousey = parseInt(window.event.clientY) + 0.0;
-            }
-            var dx = hostengine.mousex-(hostengine.displaywidth/2)-hostengine.parent_x;
-            var dy = hostengine.mousey-(hostengine.displayheight/2)-hostengine.parent_y;
-            hostengine.drag(-dx,-dy); // TODO smooth
-        }
-
-        // must return false to prevent operating system drag and drop from handling events
-        return false;
-
-    }
-
-    ///
-    /// catch mouse up
-    ///
-
-    this.event_mouse_up = function(e) {
-
-        var hostengine = null;
-        if( window && window.event && window.event.srcElement ) {
-            hostengine = window.event.srcElement.tile_engine;
-        } else if( e.target ) {
-            hostengine = e.target.tile_engine;
-        } else if( e.srcElement ) {
-            hostengine = e.srcElement.tile_engine;
-        }
-        
-
-        if( hostengine ) {
-            if( netscape ) {
-                hostengine.mousex = parseInt(e.pageX) + 0.0;
-                hostengine.mousey = parseInt(e.pageY) + 0.0;
-            } else {
-                hostengine.mousex = parseInt(window.event.clientX) + 0.0;
-                hostengine.mousey = parseInt(window.event.clientY) + 0.0;
-            }
-            hostengine.mousedown = 0;
-        }
-
-        // must return false to prevent operating system drag and drop from handling events
-        return false;
-    }
-
-    ///
-    /// catch mouse out
-    ///
-
-    this.event_mouse_out = function(e) {
-
-        var hostengine = null;
-        if( window && window.event && window.event.srcElement ) {
-            hostengine = window.event.srcElement.tile_engine;
-        } else if( e.target ) {
-            hostengine = e.target.tile_engine;
-        } else if( e.srcElement ) {
-            hostengine = e.srcElement.tile_engine;
-        }
-
-
-        if( hostengine ) {
-            if( netscape ) {
-                hostengine.mousex = parseInt(e.pageX) + 0.0;
-                hostengine.mousey = parseInt(e.pageY) + 0.0;
-            } else {
-                hostengine.mousex = parseInt(window.event.clientX) + 0.0;
-                hostengine.mousey = parseInt(window.event.clientY) + 0.0;
-            }
-            hostengine.mousedown = 0;
-        }
-
-        // must return false to prevent operating system drag and drop from handling events
-        return false;
-    }
-
-
-    ///
-    /// register new handlers to catch desired events
-    ///
-
-    // NW removed parameter - always use parent
-    this.event_catch = function() {
-
-       this.parent.style.cursor = 'move';
-
-        if( netscape ) {
-            window.captureEvents(Event.MOUSEMOVE);
-            window.captureEvents(Event.KEYPRESS);
-        }
-
-        this.parent.onmousemove = this.event_mouse_move;
-        this.parent.onmousedown = this.event_mouse_down;
-        this.parent.onmouseup = this.event_mouse_up;
-        this.parent.onkeypress = this.event_key;
-        window.ondblclick = this.event_double_click;
-
-        if( window ) {
-            window.onmousemove = this.event_mouse_move;
-            window.onmouseup = this.event_mouse_up;
-            window.ondblclick = this.event_double_click;
-        }
-
-    }
-
-       this.setURLAttribute = function(k,v)
-       {
-               this.urlAttr[k] = v; 
-       }
-
-       this.getURLAttribute = function(k)
-       {
-               return this.urlAttr[k];
-       }
-
-       this.getDownloadedTileBounds = function()
-       {
-               var bounds = new Array();
-               bounds.w=this.lon_min; 
-               bounds.s=normallat(this.lat_min);
-               bounds.e=this.lon_max;
-               bounds.n=normallat(this.lat_max);
-               return bounds;
-       }
-
-       this.getVisibleBounds = function()
-       {
-               var bounds = new Array();
-               bounds.w = this.xToLon(0);
-               bounds.s = this.yToLat(this.theheight);
-               bounds.e = this.xToLon(this.thewidth);
-               bounds.n = this.yToLat(0);
-               return bounds;
-       }
-       
-       // navout and navin stuff - START
-       // draw navigation buttons into the parent div
-
-    // ENTRY CODE BEGINS HERE....
-
-
-    // get parent div or fail
-    this.parent = document.getElementById(parentname);
-    if( this.parent == null ) {
-        alert('The tile map engine cannot find a parent container named ['
-                +parentname+']');
-        return;
-    }
-
-    //
-    // store for later
-    //
-
-    this.parentname = parentname;
-    this.hints = hints;
-    this.feedurl = feedurl;
-    this.url = url;
-    this.lon = lon;
-    this.lat = mercatorlat(lat);
-    this.thewidth = w;
-    this.theheight = h;
-    this.dragcontainer = 1;
-    this.debug = 0;
-
-    // for firefox keyboard
-    defaultEngine = this;
-    document.engine = this;
-
-
-    //
-    // decide on display width and height
-    //
-    if( !w || !h ) 
-       {
-        w = parseInt(this.parent.style.width);
-        h = parseInt(this.parent.style.height);
-        if(!w || !h) 
-               {
-            w = 512;
-            h = 256;
-            this.parent.style.width = w + 'px';
-            this.parent.style.height = h + 'px';
-        }
-    } 
-       else 
-       {
-        this.parent.style.width = parseInt(w) + 'px';
-        this.parent.style.height = parseInt(h) + 'px';
-    }
-    this.displaywidth = w;
-    this.displayheight = h;
-
-    this.minzoom = 0;
-    this.maxzoom = 20;
-
-    //
-    // enforce parent div style?
-    // position absolute is really only required for firefox
-    // http://www.quirksmode.org/js/findpos.html
-    //
-
-    this.parent_x = getCSSPositionX(this.parent);
-    this.parent_y = getCSSPositionY(this.parent);
-
-    this.parent.style.position = 'relative';
-    this.parent.style.overflow = 'hidden';
-    this.parent.style.backgroundColor = '#000036';
-
-
-       // attach event capture parent div
-       this.event_catch();
-
-    this.clean();
-       //this.makeZoom();
-
-    this.zoomTo(zoom);
-}
-
-
-function normallat(mercatorlat)
-{
-    var tp = 180/PI*(2 * Math.atan(Math.exp(mercatorlat * PI / 180)) - PI / 2);
-    return tp;
-}
-
-function mercatorlat(normallat)
-{
-  var lpi =  3.14159265358979323846;
-  return  Math.log( Math.tan( (lpi / 4.0) + (normallat / 180.0 * lpi / 2.0))) * 
-                      180.0 / lpi ;
-}