if (document.images)
		{
		clientson = new Image(); clientson.src = "images/clients_o.png";
		clientsoff = new Image(); clientsoff.src = "images/clients.png";
		
		candidateson = new Image(); candidateson.src = "images/candidates_o.png";
		candidatesoff = new Image(); candidatesoff.src = "images/candidates.png";
		
		opportunitieson = new Image(); opportunitieson.src = "images/opportunities_o.png";
		opportunitiesoff = new Image(); opportunitiesoff.src = "images/opportunities.png";
		
		contacton = new Image(); contacton.src = "images/contact_o.png";
		contactoff = new Image(); contactoff.src = "images/contact.png";
		}

		function imgOn(imgName) {
		if (document.images) {
		document[imgName].src = eval(imgName + "on.src");
		}
		}
		function imgOff(imgName) {
		if (document.images) {
		document[imgName].src = eval(imgName + "off.src");
		}
		}