Javascript and radio button

[dmj120]

I was wondering how to have a input box appear if a radio button (named other) was selected.

Can anyone help or point me in the right direction?

Thanks in advance

[ahk2chan]

<form name="testform" action="" method="post">
  <input type="radio" name="testradio" value="value1" onClick="document.testform.testtext.value=null;document.testform.testtext.disabled=true">value1</input><br/>
  <input type="radio" name="testradio" value="value2" onClick="document.testform.testtext.value=null;document.testform.testtext.disabled=true">value2</input><br/>
  <input type="radio" name="testradio" value="value3" onClick="document.testform.testtext.value=null;document.testform.testtext.disabled=true">value3</input><br/>
  <input type="radio" name="testradio" value="valueo" onClick="document.testform.testtext.disabled=false">Other</input>
  <input type="text" name="testtext" disabled="true"/><br/>
</form>

Basically what this will do is when you select the first 3 buttons, it will clear the text in the text field, and disable the text field. If you click on the 4th button, then the text field will be enabled.

[dmj120]

Thank you. I'll put this in my form.