if (document.images){
		var homeon = new Image(); homeon.src = "images/menu_home_on.gif";
		var homeoff = new Image(); homeoff.src = "images/menu_home_off.gif";
		var exhibitionson = new Image(); exhibitionson.src = "images/menu_exhibitions_on.gif";
		var exhibitionsoff = new Image(); exhibitionsoff.src = "images/menu_exhibitions_off.gif";
		var abouton = new Image(); abouton.src = "images/menu_about_on.gif";
		var aboutoff = new Image(); aboutoff.src = "images/menu_about_off.gif";
		var proposalson = new Image(); proposalson.src = "images/menu_proposals_on.gif";
		var proposalsoff = new Image(); proposalsoff.src = "images/menu_proposals_off.gif";
		var contacton = new Image(); contacton.src = "images/menu_contact_on.gif";
		var contactoff = new Image(); contactoff.src = "images/menu_contact_off.gif";
		
		var currenton = new Image(); currenton.src = "images/title_currentOn.gif";
		var currentoff = new Image(); currentoff.src = "images/title_currentOff.gif";
		var upcomingon = new Image(); upcomingon.src = "images/title_futureOn.gif";
		var upcomingoff = new Image(); upcomingoff.src = "images/title_futureOff.gif";
		var paston = new Image(); paston.src = "images/title_pastOn.gif";
		var pastoff = new Image(); pastoff.src = "images/title_pastOff.gif";
		}
		
		function changon (pic){
		if (document.images){
		document.images[pic].src = eval (pic + "on.src");
		}
		}
		
		function changoff (pic){
		if (document.images){
		document.images[pic].src = eval (pic + "off.src");
		}
		}

		function noSpam(user,domain){
		locationstring = "mailto:" + user + "@" + domain;
		window.location = locationstring;
		}