function popwin(url,w,h)
{
x=screen.width/2;
x=x-w/2;
y=screen.height/2;
y=(y-h/2)-60;
popUp=window.open(url,'win', 'width='+w+', height='+h+', left='+x+', top='+y+', directories=1, status=1, scrollbars=1, resizable=1, menubar=1, locationbar=1')
}