function preLoadImages(){
var t='<layer top="-100" left="0" visibility="hide"><div style="position:absolute; top:-100px; left:0px; visibility:hidden">';
for(i=0;i<arguments.length;i++)t+='<img src="'+arguments[i]+'">';
t+='</div></layer>';
document.write(t);
}


function swapImage(imgN,imgU)
{
	if(document.images)
	{
		document.images[imgN].src=imgU;
	}
}