webBrowser 调用html元素的事件

private void button1_Click( object sender,EventArgse)
... {
object o = this .webBrowser1.Document.GetElementById( " char_leben_tt " ).InvokeMember( " onMouseOver " );
// this.webBrowser1.Document.GetElementById("char_leben_tt").MouseOver+=newHtmlElementEventHandler(Form1_MouseOver);
}