homeOn = new Image;
		homeOn.src = '/images/btn_home_on.gif';
		homeOff = new Image;
		homeOff.src = '/images/btn_home_off.gif';
		homeDown = new Image;
		homeDown.src = '/images/btn_home_down.gif';
		
		serviceOn = new Image;
		serviceOn.src = '/images/btn_service_on.gif';
		serviceOff = new Image;
		serviceOff.src = '/images/btn_service_off.gif';
		serviceDown = new Image;
		serviceDown.src = '/images/btn_service_down.gif';
		
		userOn = new Image;
		userOn.src = '/images/btn_user_on.gif';
		userOff= new Image;
		userOff.src = '/images/btn_user_off.gif';
		userDown = new Image;
		userDown.src = '/images/btn_user_down.gif';
		
		function changeImage(imgName, imgObj){
			if (document.images) 
            	document.images[imgName].src = eval(imgObj+".src");
 		}

		function showLayer(layer) {
			if (document.all) 
				dom = eval('document.all' + '["' +layer+ '"]' + '.style'); 
			if (document.layers) 
				dom = eval('document.layers' + '["' +layer+ '"]');  
			if (document.getElementById) 
				dom = eval('document.getElementById("' +layer+ '").style');
			if (document.layers) dom.visibility = "show"; else dom.visibility = "visible";
			
			if (layer == 'top' || layer == 'left') {
				if (!document.layers) dom.visibility = "hidden";
			}
			dom.index = 1;
		}
		function hideLayer(layer) {
			if (document.all) 
				dom = eval('document.all' + '["' +layer+ '"]' + '.style'); 
			if (document.layers) 
				dom = eval('document.layers' + '["' +layer+ '"]');  
			if (document.getElementById) 
				dom = eval('document.getElementById("' +layer+ '").style');
			if (document.layers) dom.visibility = "hide"; else dom.visibility = "hidden";
			dom.index = 1;
		}
		function hideLayers(){ /*hide all layers */
			hideLayer('home');
			hideLayer('services');
			hideLayer('users');
			hideLayer('blank');
		}

		function switchBack(){ /*Switches rollover buttons back to original state*/
			changeImage('homebutton','homeOff');
			changeImage('userbutton','userOff');
			changeImage('servicebutton','serviceOff');
			//alert('test');
		}