function OpenWindowEx(url, width, height, scroll, left, top) 
{
    scroll = (scroll ? scroll : "no");
    left = (left > 4 ? left : (screen.width/2 - width/2));
    top = (top ? top : (screen.height/2 - height/2));
    window.open(url, 'win_ex', "left="+left+",top="+top+",width="+width+",height="+height+",scrollbars="+scroll+",toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no");
}