var _dialog = new Dialog();

function ShowDiv(_title,_url,_width,_height) {    
    _dialog.Title = _title;
    _dialog.URL = _url;
    _dialog.Width = _width;
    _dialog.Height = _height;
    //_dialog.CancelEvent = function() { _dialog.close(); var tCloseElem = window.parent.document.getElementById("_f5"); tCloseElem.click(); };
    _dialog.show();       
}

function HiddenDiv() {
    _dialog.close();
    return false;
}