function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function preloadImages() {
	var d=document;

	if(d.images){
 
		if(!d.preload)
		 d.preload=new Array();
    			var i,j=d.preload.length,a=preloadImages.arguments;
	 for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ 
	d.preload[j]=new Image;
	d.preload[j++].src=a[i];
		}
	}
}

addLoadEvent(preloadImages('images/web2.gif','images/photos2.jpg','images/design2.jpg'))