var mwin=null;

function openPageInPopup(url,width,height) {
    if (mwin != null) mwin.close();
    
    wleft=(screen.width-width)/2;
    wtop=((screen.height-height)/2-30);
    
    mwin=window.open(url, 'popupcommentswin',',width='+width+',height='+height+',left='+wleft+',top='+wtop+',scrollbars=yes,status=no,resizable=yes');
    mwin.window.focus();
    return;
}