function rollOn(img) 
		{
		  	if (document.images) 
		  	{
				document[img].src = eval(img + '_on.src');
			}
		}
		
		function rollOff(img) 
		{
		  	if (document.images)
		  	{
				document[img].src = eval(img + '_off.src');
			}
		}
					
		var contact_on = new Image(); contact_on.src = "images/contact-on.gif";
		var contact_off = new Image(); contact_off.src = "images/contact-off.gif";

		var home_on = new Image(); home_on.src = "images/home-on.gif";
		var home_off = new Image(); home_off.src = "images/home-off.gif";

		var about_on = new Image(); about_on.src = "images/about-on.gif";
		var about_off = new Image(); about_off.src = "images/about-off.gif";
		
		var pageLoaded = 1;