function pop(a, scrollbars) {
    mwin = window.open(a.href,'displayWindow','width=1024,height=670,scrollbars='+scrollbars+',resizable=yes');
    mwin.moveTo(screen.width/2 - 512 , screen.height/2-384);
    mwin.focus();
    return false;
}

function pop2(a) {
    var winWidth = 1024,
        winHeight = 850;
    if (screen.height < 900) {
        winHeight = screen.height - 50;
    }
    mwin = window.open(a.href,'displayWindow2','width=1024,height='+winHeight+',scrollbars=yes,resizable=yes');
    mwin.moveTo( (screen.width - winWidth) / 2, ( (screen.height - winHeight) / 2 ) - 50);
    mwin.focus();
    return false;
}