public function getContextMenuHTML($identifier)
{
$I = new HTMLInput("CalculatorRechner");
$I->onEnter(OnEvent::rme($this, "calculate", array("\$j('input[name=CalculatorRechner]').val()"), "function(t){ if(t.responseText != '##') { \$j('{$identifier}').val(t.responseText); " . OnEvent::closeContext() . " } }"));
$I->requestFocus(true);
echo $I;
echo "<div id=\"CalculatorErgebnisse\"></div>";
echo "<p>Dieser Rechner unterstützt +, -, *, / sowie Klammern.</p>";
echo OnEvent::script("\$j('input[name=CalculatorRechner]').val(\$j('{$identifier}').val());");
}