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

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

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		whos_over = newImage("images/linksmenu/whos-over.gif");
		whos_down = newImage("images/linksmenu/whos-down.gif");
		whos_sel = newImage("images/linksmenu/whos-sel.gif");
		main_over = newImage("images/linksmenu/main-over.gif");
		main_down = newImage("images/linksmenu/main-down.gif");
		main_sel = newImage("images/linksmenu/main-sel.gif");
		weekly_over = newImage("images/linksmenu/weekly-over.gif");
		weekly_down = newImage("images/linksmenu/weekly-down.gif");
		weekly_sel = newImage("images/linksmenu/weekly-sel.gif");
		choices_over = newImage("images/linksmenu/choices-over.gif");
		choices_down = newImage("images/linksmenu/choices-down.gif");
		choices_sel = newImage("images/linksmenu/choices-sel.gif");
		official_over = newImage("images/linksmenu/official-over.gif");
		official_down = newImage("images/linksmenu/official-down.gif");
		official_sel = newImage("images/linksmenu/official-sel.gif");
		pickform_over = newImage("images/linksmenu/pickform-over.gif");
		pickform_down = newImage("images/linksmenu/pickform-down.gif");
		pickform_sel = newImage("images/linksmenu/pickform-sel.gif");
		preloadFlag = true;
	}
}