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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		forward_over = newImage("../gfx/forward_over.gif");
		reverse_over = newImage("../gfx/reverse_over.gif");
		fastforward_over = newImage("../gfx/fastforward_over.gif");
		fastreverse_over = newImage("../gfx/fastreverse_over.gif");
		end_over = newImage("../gfx/end_over.gif");
		start_over = newImage("../gfx/start_over.gif");
		stop_over = newImage("../gfx/stop_over.gif");
		pause_over = newImage("../gfx/pause_over.gif");
		preloadFlag = true;
	}
}

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];
		}
	}
}