我如何在浏览器中单击javaScript链接

exp: <td><input type="text" size="15" name="email" value="Email" onfocus="if (this.value == 'Email') { this.value=''; }" onblur="if (this.value == '') { this.value='Email'; }"></td>我在邮件中写下了这些代码:webBrowser1.Document.GetElementById("电子邮件")。textBox1.Text SetAttribute("价值");"或者

<td>&nbsp;&nbsp;&nbsp;<input type="submit" value="Login"></td>

我在这里写了这些代码

webBrowser1.Document.Forms[0].InvokeMember("submit");

,

<a target="main" onmousedown="return false;"
   title="A collection of crimes you can do with other players [G]"
   href="./BeO/webroot/index.php?module=GroupCrimes" class="menuLink"
   accesskey="G">Group Crimes</a>

我如何在浏览器c#中点击该链接?