if (document.images) 
{
aboutRMOff = new Image();
aboutRMOn = new Image();
aboutRMOff.src = "graphics/aboutrisk.gif";
aboutRMOn.src = "graphics/aboutriskover.gif";

servicesRMOff = new Image();
servicesRMOn = new Image();
servicesRMOff.src = "graphics/services.gif";
servicesRMOn.src = "graphics/servicesover.gif";

contactRMOff = new Image();
contactRMOn = new Image();
contactRMOff.src = "graphics/contactrisk.gif";
contactRMOn.src = "graphics/contactriskover.gif";

resourcesRMOff = new Image();
resourcesRMOn = new Image();
resourcesRMOff.src = "graphics/resources.gif";
resourcesRMOn.src = "graphics/resourcesover.gif";

}