var myimages=new Array();
var di=document.images;

function preloadImages() {
	for (i=0;i<arguments.length;i++) {
		myimages[i]=new Image();
		myimages[i].src=arguments[i];
	}
}

function changeImg(imgName,path) {
	imgObj = di[imgName];
	//alert('changeoimg:'+imgObj.src+'___'+path);
	imgObj.src = path;
}