CFwindow validation on Checkbox

I am trying to validate records based on the onclick event of a Checkbox or change event of a select option, for some reason this is not working in a cfwindow.

This is my form. can some please tell me what I did wrong here. The javascript is not even being called in a CFWINDOW.

<input type="checkbox" name="ccSameddress" value="shipsame" onclick="return sameinfo();">and below is my script:

<script language="JavaScript">
function sameinfo()
{
var d = document.cbfoundation;       
    if (d.chkSameddress.checked==true)
    {
        d.shipFName.value=d.bccFname.value;       
        d.shipLName.value=d.bccLname.value;       
        d.shipAddr1.value=d.bccAddr.value;   
    }
    if (d.chkSameddress.checked==false){
        d.shipFName.disabled=false;
        d.shipLName.disabled=false;
        d.shipAddr1.disabled=false;       
    }   
}
</script>