var imgSrc="http://www.zangocreative.com/"
	if (document.images) {
	  image1on = new Image();
	  image1on.src = imgSrc + "images/nav/whyzango.gif";
	  image2on = new Image();
	  image2on.src = imgSrc + "images/nav/services.gif";
	  image3on = new Image();
	  image3on.src = imgSrc + "images/nav/industries.gif";
	  image4on = new Image();
	  image4on.src = imgSrc + "images/nav/work.gif";
	  image5on = new Image();
	  image5on.src = imgSrc + "images/nav/about.gif";
	  image6on = new Image();
	  image6on.src = imgSrc + "images/nav/contact.gif";
	  image7on = new Image();
	  image7on.src = imgSrc + "images/nav/contactus.gif";
	  
	  image1roll = new Image();
	  image1roll.src = imgSrc + "images/nav/whyzango_roll.gif";
	  image2roll = new Image();
	  image2roll.src = imgSrc + "images/nav/services_roll.gif";
	  image3roll = new Image();
	  image3roll.src = imgSrc + "images/nav/industries_roll.gif";
	  image4roll = new Image();
	  image4roll.src = imgSrc + "images/nav/work_roll.gif";
	  image5roll = new Image();
	  image5roll.src = imgSrc + "images/nav/about_roll.gif";
	  image6roll = new Image();
	  image6roll.src = imgSrc + "images/nav/contact_roll.gif";
	  image7roll = new Image();
	  image7roll.src = imgSrc + "images/nav/contactus_roll.gif";
	}
	
	function changeImages() {
	  if (document.images) {
	    for (var i=0; i<changeImages.arguments.length; i+=2) {
	      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
	    }
	  }
	}