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) {
		secondary_07_over = newImage("/images/PrimaryNav/PrimaryNav_07-over.gif");
		secondary_07_down = newImage("/images/PrimaryNav/PrimaryNav_07-down.gif");
		secondary_09_over = newImage("/images/PrimaryNav/PrimaryNav_09-over.gif");
		secondary_09_down = newImage("/images/PrimaryNav/PrimaryNav_09-down.gif");
		secondary_11_over = newImage("/images/PrimaryNav/PrimaryNav_11-over.gif");
		secondary_11_down = newImage("/images/PrimaryNav/PrimaryNav_11-down.gif");
		secondary_13_over = newImage("/images/PrimaryNav/PrimaryNav_13-over.gif");
		secondary_13_down = newImage("/images/PrimaryNav/PrimaryNav_13-down.gif");
		secondary_15_over = newImage("/images/PrimaryNav/PrimaryNav_15-over.gif");
		secondary_15_down = newImage("/images/PrimaryNav/PrimaryNav_15-down.gif");
		secondary_17_over = newImage("/images/PrimaryNav/PrimaryNav_17-over.gif");
		secondary_17_down = newImage("/images/PrimaryNav/PrimaryNav_17-down.gif");
          	index_main_03_over = newImage("/images/index/index_main_03-over.jpg");
          	index_main_05_over = newImage("/images/index/index_main_05-over.jpg");
          	index_main_07_over = newImage("/images/index/index_main_07-over.jpg");
          	index_main_09_over = newImage("/images/index/index_main_09-over.jpg");
          	index_main_11_over = newImage("/images/index/index_main_11-over.jpg");
		preloadFlag = true;
	}
}