function popup(url){
var win_w, win_h;
win_w = screen.availWidth; 
win_h = screen.availHeight; 
myWindow = window.open(url, "", "top=1, left=1, width=" + win_w + ", height=" + win_h + ", toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes");
if (!myWindow.opener) myWindow.opener = self;
//window.close();
}