// preload images:
if (document.images) {
services = new Image(79,95); services.src = "images/menu-down-services.gif";
clinical = new Image(95,95); clinical.src = "images/menu-down-clinical.gif";
medical  = new Image(95,97); medical.src  = "images/menu-down-medical.gif";
training = new Image(92,98); training.src = "images/menu-down-training.gif";
project  = new Image(92,98); project.src  = "images/menu-down-project.gif";
contact  = new Image(79,97); contact.src  = "images/menu-down-contact.gif";
}