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];
				document.getElementById(changeImages.arguments[i]).src = changeImages.arguments[i+1];
				
			}
		}
	}
	
	var preloadFlag = false;
	function preloadImages() {
		if (document.images) {
			var nl_mainButton_news = newImage("images/texts/nl_mainButtonOver_news.gif");
			var nl_mainButton_who = newImage("images/texts/nl_mainButtonOver_who.gif");
			var nl_mainButton_what = newImage("images/texts/nl_mainButtonOver_what.gif");
			var nl_mainButton_idonor = newImage("images/texts/nl_mainButtonOver_idonor.gif");
			var nl_mainButton_links = newImage("images/texts/nl_mainButtonOver_links.gif");
			var en_mainButton_news = newImage("images/texts/en_mainButtonOver_news.gif");
			var en_mainButton_who = newImage("images/texts/en_mainButtonOver_who.gif");
			var en_mainButton_what = newImage("images/texts/en_mainButtonOver_what.gif");
			var en_mainButton_idonor = newImage("images/texts/en_mainButtonOver_idonor.gif");
			var en_mainButton_links = newImage("images/texts/en_mainButtonOver_links.gif");
			
			var nl_button_search = newImage("images/texts/nl_button_search.png");
			var en_button_search = newImage("images/texts/en_button_search.png");
			preloadFlag = true;
		}
	}