<div class="form-group">
<input name="format" type="hidden" value="html">
<input name="lat" type="text" class="form-control input-sm" placeholder="latitude" value="<?php echo htmlspecialchars($_GET['lat']); ?>" >
+ <span id="switch-coords"><></span>
<input name="lon" type="text" class="form-control input-sm" placeholder="longitude" value="<?php echo htmlspecialchars($_GET['lon']); ?>" >
max zoom