function imageSwap(itemID, newImageUrl)
{
	var item = document.getElementById(itemID);
	item.src = newImageUrl;
}

function preloadImages()
{
	var d=document;
	if(d.images) {
		if(!d.preloadedImages)
  			d.preloadedImages=new Array();
    	var j = d.preloadedImages.length;
    	var a = preloadImages.arguments;
    	for(var i=0; i<a.length; i++){
			d.preloadedImages[j]=new Image;
			d.preloadedImages[j++].src=a[i];
   		}
  	}
}