function open_win(doc, w, h)
{
    window.open(doc, '', 'width='+w+',height='+h+', copyhistory=no,directories=no,menubar=no,location=no,resizable=yes,scrollbars=yes');
}

function del_win(com,item_id,message,other)
{
    if (!message) message='';
    if (!other) other='';
    open_win('?com=del_window&ccom='+com+'&item_id='+item_id+'&message='+message+'&other='+other ,500,200);
}