// db || bst -- ROLLOVERS

	var sitemapon = new Image;
	var caughtinwebon = new Image;
	
	var sitemapoff = new Image;
	var caughtinweboff = new Image;
	
	sitemapon.src = "images/bst_main_sitemap_on.gif";
	caughtinwebon.src = "images/bst_main_page_spyderweb_on.gif";
	
	sitemapoff.src = "images/bst_main_sitemap.gif";
	caughtinweboff.src = "images/bst_main_page_spyderweb.gif";
	
	function rollNav(layerName,imageName,replacedImage)
		{	
			if (dom1)
			{  
			document.getElementById(imageName).setAttribute("src",eval(replacedImage + ".src"));
			}
			else if (nscp4)
			{  
			//turn off for netscape 4 series -- conflict with drop down navigation -- fix later.
			//document[layerName].document[imageName].src = eval(replacedImage + ".src");
			}
			else
			{  
			document[imageName].src = eval(replacedImage + ".src");
			}
		}
	//end rollovers