Embedding OpenLayers in a Wiki Page

Wiki Markup

{HTML()}
<STYLE TYPE="text/css">
<!--
@import url(map/style/map_style.css);
-->
<!--
@import url(map/page_style.css);
-->
</STYLE>
{HTML}
{HTML()}<div id="map" class="smallmap"></div>{HTML}{JS(file="map/OpenLayers.js")}{JS}{JS(file="map/mfiglobal.js")}{JS}

Javascript

/* Open Layers Map http://openlayers.org for MindFreedom Lancaster */
/*                                                                 */
/* DJ Barney, June 2009 - thanks to crschmidt for slapping me with */
/* a large trout.                                                  */
/*                                                                 */
/* Important. Tikiwiki page *must* reference external Javascript   */
/* file. PluginJS will *not* run multiple Javascript statements    */
/* edited into the wiki markup.                                    */
/*                                                                 */
/* addLoadEvent function is *required* to allow onload event after */
/* the Tikiwiki onload event otherwise the Javascript will never   */
/* run.                                                            */
/*
/* Page editing: PluginJS *cannot* be previewed. Page *must* be    */
/* saved to be able to validate the code (usually an admin task).  */
 
        var map, layer;
        function olinit(){
            map = new OpenLayers.Map('map');
            layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                "http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} );
            map.addLayer(layer);
            var newl = new OpenLayers.Layer.Text( "text", {location: "map/mfi-locations.txt"} );
            map.addLayer(newl);
            map.addControl(new OpenLayers.Control.LayerSwitcher());
            map.zoomToMaxExtent();
        }
 	function addLoadEvent(func) { 
	  var oldonload = window.onload;
	  if (typeof window.onload != 'function') { 
	    window.onload = func; 
	  } else { 
	    window.onload = function() { 
	      if (oldonload) { 
	        oldonload(); 
	      } 
	      func(); 
	    } 
	  } 
	} 
	addLoadEvent(olinit);