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) {
		idLEVEL01_over = newImage("<%=fimg%>images/LEVEL01_over.gif");
		idLEVEL02_over = newImage("<%=fimg%>images/LEVEL02_over.gif");
		idLEVEL03_over = newImage("<%=fimg%>images/LEVEL03_over.gif");
		idLEVEL04_over = newImage("<%=fimg%>images/LEVEL04_over.gif");
		idBack_over    = newImage("<%=fimg%>images/Back_over.gif");
		idForward_over = newImage("<%=fimg%>images/Forward_over.gif");
		idSources_over = newImage("<%=fimg%>images/Sources_over.gif");
		idSearch_over  = newImage("<%=fimg%>images/Search_over.gif");
		idMain_over    = newImage("<%=fimg%>images/Main_over.gif");
		idHotLine_over = newImage("<%=fimg%>images/HotLine_over.gif");
		preloadFlag = true;
	}
}