window.onload = function() {
				MM_preloadImages('img/scroll_off.png');
				MM_preloadImages('img/scroll_on.png');
			};
			
			function MM_preloadImages() {				
			  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];
					}
				}
			}