if (document.images)
{
preload_image_object = new Image();
image_url = new Array();
image_url[0] = "images/nav/home-hover.gif";
image_url[1] = "images/nav/about-us-hover.gif";
image_url[2] = "images/nav/services-hover.gif";
image_url[3] = "images/nav/areas-covered-hover.gif";
image_url[4] = "images/nav/testimonials-hover.gif";
image_url[5] = "images/nav/contact-us-hover.gif";
image_url[5] = "images/nav/faq-hover.gif";
image_url[5] = "images/nav/links-hover.gif";
var i = 0;
for(i=0; i<=6; i++) 
preload_image_object.src = image_url[i];
}