text box and radio buttons doesn't work together??

I try to change "checked" property of the radio buttons when I click on the text box.
Here is my code:

<form name="form1" method="post" action="response.asp">
<input type="radio" name="radiosample" checked>Sample #1<br>
<input type="radio" name="radiosample">Sample #2<br>
<input type="radio" name="radiosample" >Sample #3<br>
<input type="text" size="20" name="text_box" onClick="Check_radio()">
</form>

<script language="vbScript">
Sub Check_radio()
form1.radiosample.checked(2)= True
End Sub
</script>

I am getting an error: "Object doesn't support this property or method "form1.radiosample.checked'.

What is wrong?

I would appreciate any help!

Hi mate,

You just have the syntax slighty wrong. Here you go:

<script language="vbScript">
Sub Check_radio()
form1.radiosample(2).checked= True
End Sub
</script>

The index for an array starts at 0 so, in your example, radiosample(2) points to the 3rd radio button in the group.

Andrew

Yes!!!!! I got it!

Thank you so much!!!