// Roll-Over
function roll(obj, state) {
  if (state == 0) { document.images[obj].src = "/img/nav/" + obj + "_0.gif" };
  if (state == 1) { document.images[obj].src = "/img/nav/" + obj + "_1.gif" };
}

//submit sort form on sessions page
function sortTo(object) {
    window.location.href = object.options[object.selectedIndex].value;
}

//pop-up open house announcement on gateway
function popAnnouncement(path){
	window.open(path,'openhouse','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=300,height=390,top=30,left=30');
}