function open_editwin(my_url,win_name,width_x,height_y,top_pos,left_pos,scrollbars) {
        var editwin = "";    
        editwin = editwin + "width=" + width_x;
        editwin = editwin + ",height=" + height_y;
        editwin = editwin + ",resizable=yes";
        editwin = editwin + ",scrollbars=yes";
        editwin = editwin + ",menubar=no";
        editwin = editwin + ",toolbar=no";
        editwin = editwin + ",directories=no";
        editwin = editwin + ",location=no";
        editwin = editwin + ",status=no";
        editwin = editwin + ",top=" + top_pos;
        editwin = editwin + ",left=" + left_pos;
        editwin_win = window.open(my_url,win_name,editwin);
        editwin_win.focus();
        editwin_win.opener = parent;
}