function popupEvent(eid, dt) {
	var popwin;
	popwin = window.open('popup.php?id=' + eid + '&dt=' + dt, 'eventpop', 'height=300,width=600,personalbar=no,resizable=yes,location=no,menubar=no');
	popwin.focus(); }

function changeCategory(sel) {
	var d = new Date();
	var yr = (d.getFullYear());
	var mo = (d.getMonth() + 1);
	var cat = sel.options[sel.selectedIndex].value;
	if (cat != "") cat = "&cat=" + cat;
	document.location.href = "index.php?year=" + yr + "&mon=" + mo + cat; }