I have the following form:

<form name=survey1 action=add5up.php method=post onsubmit=return validateForm()>

<div id=question>Q1) My programme meets my expectations</div><br />

Always<INPUT  TYPE = 'Radio' Name ='q1'  value= 'a'> 

Usually<INPUT  TYPE = 'Radio' Name ='q1' value= 'b'> 

Rarely<INPUT  TYPE = 'Radio' Name ='q1' value= 'c'> 

Never<INPUT  TYPE = 'Radio' Name ='q1' value= 'd'> 

<input type=submit value=addData />

</form>

I am trying to validate whether a Radio button has been selected.

The code I am using:

<script type=text/javascript>

function validateForm()

{

if( document.forms[survey1][q1].checked)

{

    return true;

}



else

{

    alert('Please answer all questions');

    return false;

}

}

</script>

This is not working. Any ideas?