javascript: getting html label values

Hi there

I am using a checkbox and a corresponding label. When the user checks the checkbox I want to be able to retrieve the corresponding label value. How do I do this.

Here is the relevant portion of my code

<td>
<input type = "checkbox" name = "checkuser" id= "checkuser" value = "userid" onClick = "getname()">
</td>

<td>
<label for = "checkuser">usersurname, usersurname <label>
</td>

thanks

langals

Here is an example:

Code:

---

<script language="JavaScript">

function getname(chk){
        alert(chk.value);
}

</script>
<form name="LabelClicker">
<input type = "checkbox" name = "checkuser" id= "checkuser" value = "userid" onClick = "getname(this)">
</form>

---