if (document.images)
{
homenav = new Image;
homenav_roll = new Image;
partnersnav = new Image;
partnersnav_roll = new Image;
studentsnav = new Image;
studentsnav_roll = new Image;
pressnav = new Image;
pressnav_roll = new Image;
constructionnav = new Image;
constructionnav_roll = new Image;
safenav = new Image;
safenav_roll = new Image;
contactnav = new Image;
contactnav_roll = new Image;

homenav.src = "image/nav/home.gif";
homenav_roll.src = "image/nav/home_roll.gif";
partnersnav.src = "image/nav/partners.gif";
partnersnav_roll.src = "image/nav/partners_roll.gif";
studentsnav.src = "image/nav/students.gif";
studentsnav_roll.src = "image/nav/students_roll.gif";
pressnav.src = "image/nav/press.gif";
pressnav_roll.src = "image/nav/press_roll.gif";
constructionnav.src = "image/nav/construction.gif";
constructionnav_roll.src = "image/nav/construction_roll.gif";
safenav.src = "image/nav/safe.gif";
safenav_roll.src = "image/nav/safe_roll.gif";
contactnav.src = "image/nav/contact.gif";
contactnav_roll.src = "image/nav/contact_roll.gif";
}