function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.jpg");
		smal_over = newImage("images/smal-over.jpg");
		plan_over = newImage("images/plan-over.jpg");
		top_3_over = newImage("images/top_3-over.jpg");
		preloadFlag = true;
	}
}
function PopupPic(sPicURL) { 
   window.open( "popup.html?"+sPicURL, "",  
   "resizable=1,HEIGHT=200,WIDTH=200"); }