if (document.images)
{
preload_image_object = new Image();
// set image url
image_url = new Array();
image_url[0] = "_img/logo_O.jpg";
image_url[1] = "_img/nav/forks_O.jpg";
image_url[2] = "_img/nav/shocks_O.jpg";
image_url[3] = "_img/nav/tech_O.jpg";
image_url[4] = "_img/nav/about_O.jpg";
image_url[5] = "_img/nav/community_O.jpg";
image_url[6] = "_img/nav/warranty_O.jpg";
image_url[7] = "_img/nav/search_O.jpg";
image_url[8] = "_img/nav/contact_O.jpg";
image_url[9] = "_img/nav/support_O.jpg";

var i = 0;
for(i=0; i<=9; i++) 
 preload_image_object.src = image_url[i];
}