<!--

		function PreloadImages(length, path, type) {
		    for(var i = 1; i<=length; i++) {
		        this[i]= new Image()
		        this[i].src= path + i + type
		    }
		    return this
		}
		
		over=new PreloadImages(10,'images/sitemap_01_button_0','b.gif')
		norm=new PreloadImages(10,'images/sitemap_01_button_0','a.gif')
		
		function rollOn(num){
		if(document.images)
		    eval('document.images["norm'+num+'"].src='+'over[num].src')
		}
		function rolloff(num){
		if(document.images)
		    eval('document.images["norm'+num+'"].src='
		            +'norm[num].src')
		}

//-->