function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		mission_over = newImage("images/mission-over.gif");
		research_over = newImage("images/research-over.gif");
		projects_over = newImage("images/projects-over.gif");
		community_over = newImage("images/community-over.gif");
		staff_over = newImage("images/staff-over.gif");
		contact_over = newImage("images/contact-over.gif");
		services_over = newImage("images/services-over.gif");
		home_over = newImage("images/home-over.gif");
		preloadFlag = true;
	}
}





function openWin(url){

  window.open(url,"","height=400,width=570,menubar=0,resizable=1,scrollbars=1, status=0,titlebar=0,toolbar=0,left=0,top=0")

  }