function preloadSubpicRollovers() {
	preloadImages('/images/subpicmenu/identify_over.jpg', '/images/subpicmenu/expand_over.jpg', '/images/subpicmenu/engagement_over.jpg', '/images/subpicmenu/development_over.jpg');
}

if (window.addEventListener) {
	window.addEventListener("load", function() { preloadSubpicRollovers(); }, false);
} else if (window.attachEvent) {
	window.attachEvent("onload", function() { preloadSubpicRollovers(); });
}