if (document.images)
{
  pic1= new Image();
  pic1.src="images/about-itm_h.gif";
  pic2= new Image();
  pic2.src="images/media-center_h.gif";
  pic3= new Image();
  pic3.src="images/alumni-h.gif";
  pic4= new Image();
  pic4.src="images/recruiter-h.gif";
  pic5= new Image();
  pic5.src="images/news-events-h.gif";
  pic6= new Image();
  pic6.src="images/contact-us_h.gif";
}