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) {

		header_63_over = newImage("images/header_63-over.gif");

		header_65_over = newImage("images/header_65-over.gif");

		header_67_over = newImage("images/header_67-over.gif");

		header_69_over = newImage("images/header_69-over.gif");

		header_71_over = newImage("images/header_71-over.gif");

		preloadFlag = true;

	}

}