function window_open(url,sx,sy) {
if (!sx) var sx = 300;
if (!sy) var sy = 300;
var winl = (screen.width-sx)/2;
var wint = (screen.height-sy)/2;
popupwin=window.open(url,"AncorTour","toolbar=no,resizable=0,location=no,scrollbars=yes,directories=no,status=no,menubar=no,top="+wint+",left="+winl+",width="+sx+",height="+sy+"");
popupwin.focus();
//popupwin.document.close();
}

function window_open_noscroll(url,sx,sy) {
if (!sx) var sx = 300;
if (!sy) var sy = 300;
var winl = (screen.width-sx)/2;
var wint = (screen.height-sy)/2;
popupwin=window.open(url,"AncorTour","toolbar=no,resizable=0,location=no,scrollbars=no,directories=no,status=no,menubar=no,top="+wint+",left="+winl+",width="+sx+",height="+sy+"");
popupwin.focus();
//popupwin.document.close();
}