if (document.images) {
		var home = new Image;
		var members = new Image;
		var research = new Image;
		var publications = new Image;
		var collaborators = new Image;
		var sponsors = new Image;
		var links = new Image;
		var news = new Image;
		var contact = new Image;
		
		var homea = new Image;
		var membersa = new Image;
		var researcha = new Image;
		var publicationsa = new Image;
		var collaboratorsa = new Image;
		var sponsorsa = new Image;
		var linksa = new Image;
		var newsa = new Image;
		var contacta = new Image;

		home.src = "images/home.jpg";
		members.src = "images/members.jpg";
		research.src = "images/research.jpg";
		publications.src = "images/publications.jpg";
		collaborators.src = "images/collaborators.jpg";
		sponsors.src = "images/sponsors.jpg";
		links.src = "images/links.jpg";
		news.src = "images/news.jpg";
		contact.src = "images/contact.jpg";

		homea.src = "images/on/home.jpg";
		membersa.src = "images/on/members.jpg";
		researcha.src = "images/on/research.jpg";
		publicationsa.src = "images/on/publications.jpg";
		collaboratorsa.src = "images/on/collaborators.jpg";
		sponsorsa.src = "images/on/sponsors.jpg";
		linksa.src = "images/on/links.jpg";
		newsa.src = "images/on/news.jpg";
		contacta.src = "images/on/contact.jpg";

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	function act(imgName) {
		imgOn = eval(imgName + "a.src");
		document[imgName].src = imgOn;
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	function inact(imgName) {
		imgOff = eval(imgName + ".src");
	   document[imgName].src = imgOff;
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