var aw = window.screen.availWidth;
var ah = window.screen.availHeight;
function popWin(url,h,w) {
	var awpos = (aw / 2) - (w / 2);
	var ahpos = (ah / 2) - (h / 2);
	winOpen = window.open(url,'jonnelson','toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,width='+w+',height='+h+',top='+ahpos+',left='+awpos);
}