function querystring(key)  // returns the corresponding value for the key in querystring
	         {
	           var ary = location.search.substring(1).split("&");

	           for ( var i=0; i<ary.length; i++ )
	           {
	             if ( ary[i].split("=")[0].toUpperCase() == key.toUpperCase() )
	                return ary[i].split("=")[1];
	           }

	           return("");
	         }

	    function ShowTab()
	    {    
	        if (querystring("tab") == "map")
	        {
	            // Displays the "Map" tab on load            
	            MM_showHideLayers('overviewlayer','','hide','siteplanslayer','','hide','photoslayer','','hide','maplayer','','show','demographicslayer','','hide');
	        }    
	    }    
function MM_findObj(n, d) { //v4.01
		  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
			d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
		  if(!x && d.getElementById) x=d.getElementById(n); return x;
		}

		function MM_showHideLayers() { //v6.0
		  var i,p,v,obj,args=MM_showHideLayers.arguments;
		  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
			if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
			obj.visibility=v; }
		}
function MM_swapImgRestore() { //v3.0
	  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
	}

	function MM_preloadImages() { //v3.0
	  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
	}

	function MM_findObj(n, d) { //v4.01
	  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	  if(!x && d.getElementById) x=d.getElementById(n); return x;
	}

	function MM_swapImage() { //v3.0
	  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
	   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
	}
	function changeListFilter(propType){
		
		var url = window.location.href;
		var iPos = url.indexOf("&ListFilter=");
		if( iPos < 0 )
			iPos = url.indexOf("?ListFilter=");
		if( iPos >= 0 ){
			var newQueryString = url.substring(0, iPos);
			var iEnd = url.indexOf("&", iPos + 11);
			if(iEnd >= 0){
				newQueryString += url.substring(iEnd);
			}
			url = newQueryString;
		}
		if(url.indexOf("?") >= 0){
			url = url.concat("&ListFilter=").concat(propType);
		} else {
			url = url.concat("?ListFilter=").concat(propType);
		}
		window.location.href = url;
	}