Display the comment only after clicking

Hi,

I would like to accomplish this:

On the list of the comments, instead of displaying all the comments with the CONTENT right ahead, I would that the user will have to click on a specific comment in order to see its content (in the same windows).

I tried to use javascript with getElementById, but till now with no success.

It suppose to be something similar to:

<script type="text/javascript">
<!--
function view_comment() {
	var dtl = document.getElementById("")
	if  (dtl.style.display == "none"){
		dtl.style.display = "";
	}else{
		dtl.style.display = "none";
	}
}
//-->
</script>

And something like <a onclick="view_comment()>Test</a>
on the link that is responsible to open the content.

I would really appreciate if someone can help me out.

Thanks in advance