loadingImg1 = new Image();
		loadingImg1.src = "/assets/images/default-bg-loading.gif";
	
		overlayImg1 = new Image();
		overlayImg1.src = "/assets/images/default-bg-overlay-popup.gif";
		
		oldMessage = '';

		function showOverlay( message ) {
			if (navigator.userAgent.indexOf("MSIE 6") < 0) {
				$('overlay').show();
				$('overlay-popup').show();
				
				if( message ) {
					oldMessage = Ext.DomQuery.selectNode('#overlay-popup .overlay-popup-header').innerHTML;
					Ext.DomQuery.selectNode('#overlay-popup .overlay-popup-header').innerHTML=message;
				}
			}
		}
		
		function hideOverlay() {
			if (navigator.userAgent.indexOf("MSIE 6") < 0) {
				$('overlay').hide();
				$('overlay-popup').hide();
				Ext.DomQuery.selectNode('#overlay-popup .overlay-popup-header').innerHTML=oldMessage;
			}
		}