```
<input onclick="return (CheckBox.OnClick(this, event));" onfocus="return (CheckBox.OnFocus(this, event));" onblur="return (CheckBox.OnBlur(this, event));" onmouseover="return (CheckBox.OnMouseOver(this, event));" onmouseout="return (CheckBox.OnMouseOut(this, event));" id="V1_I1_S13_I1_C1" scriptclass="CheckBox" class="l_ fj_ " wrapped="true" direction="ltr" viewdatanode="56" tabindex="0" title="" checked="" type="checkbox">
```

Which I'm trying to call via

```
SharepointRequest.Document.GetElementById("V1_I1_S13_I1_C1").InvokeMember("click");
```