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) {
		top_11_over = newImage("img/top_11-over.gif");
		top_12_over = newImage("img/top_12-over.gif");
		top_15_over = newImage("img/top_15-over.gif");
		top_16_over = newImage("img/top_16-over.gif");
		top_17_over = newImage("img/top_17-over.gif");
		preloadFlag = true;
	}
}

function pic(dispFile){
	picWin = window.open(dispFile,"PICTURE","width=600,height=575,resizable=yes,scrollbars=yes");
}