var Nav4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4));
		
		if (document.images) {

   			qbb1on = new Image(73,23);
   			qbb1on.src = "new_images/STUS_BuyNow_down.jpg";
  			qbb1off = new Image(73,23);
   			qbb1off.src = "new_images/STUS_BuyNow.jpg";
   			
   			qbb2on = new Image(73,23);
   			qbb2on.src = "new_images/STUS_BuyNow_down.jpg";
  			qbb2off = new Image(73,23);
   			qbb2off.src = "new_images/STUS_BuyNow.jpg";
		}
		
		
		function act_off(imgName) {
  			if (document.images)
    		document[imgName].src = eval(imgName + 'off.src');
		}
		
		function act_on1(imgName) {
    		if (document.images) 
      		document[imgName].src = eval(imgName + 'on.src');
      	}