Checkbox Checking...

I have a form that produces a few checkboxes via a server side script. Once on the page, the source looks like this...

<tr>
<td><input type="checkbox" name="access" value="1" checked /></td>
<td><input type="checkbox" name="view" value="1" checked
/></td>
</tr>
<tr>
<td><input type="checkbox" name="access" value="2" checked /></td>
<td><input type="checkbox" name="view" value="2" checked
/></td>
</tr>

...what I'm trying to do is pass through the value of the checkbox
ticked through to a function. This function will then, depending on
whether the box is ticked or not, untick the access# checkbox.

I can pass the number through to my function, but I'm having
difficulty trying to reference the actual checkbox from the script.
This is what I've got so far...

function AM_MenuSelection(opt) {
var myOpt=document.frmNew.view[opt].value;
alert(myOpt);
}

As you can see, I can reference the value of the object, but need to
be able to access the related access# object.