if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[0] = "../images/home-over.gif";
      image_url[1] = "../images/company-over.gif";
      image_url[2] = "../images/residential-over.gif";
      image_url[3] = "../images/developments-over.gif";
	  image_url[4] = "../images/login-over.gif";
	  image_url[5] = "../images/contact-over.gif";	  
	  image_url[6] = "../images/loc-map-btn-over.gif";
	  image_url[7] = "../images/btn-arrange-over.gif";
	  image_url[8] = "../images/btn-floor-over.gif";
	  image_url[9] = "../images/btn-brochure-over.gif";
	  image_url[10] = "../images/btn-mortgage-over.gif";
	  image_url[11] = "../images/btn-email-over.gif";

       var i = 0;
       for(i=0; i<=11; i++) 
         preload_image_object.src = image_url[i];
    }