javascript check radio buttons automatically
<p>I wanna check radio buttons automatically: I tried this code but it does not work:
Radio buttons have 3 different values, I wanna select the radio button with value 'clean".</p>

<p>How can I check automatically radio buttons on a webpage?
Thanks!</p>

<pre><code>function getElements()
  {

  for (i=0; i&lt;document.getElementsByTagName('input').length; i++) 
  {
    //if (document.getElementsByTagName('input')[i].type == 'radio')
    if(document.getElementsByTagName('input')[i].type=='radio')
    {
        //if (document.getElementsByTagName('input')[i].value=='clean')
        document.getElementsByTagName('input')[i].click();
    }
  }
</code></pre>

<p>I modified the code as following: </p>

<pre><code> for (i=0; i&lt;document.getElementsByTagName('input').length; i++) 
  {

    if(document.getElementsByTagName('input')[i].type=='radio')
    {


        if(document.getElementsByTagName('input')[i].value == "clean")
        {
        document.getElementsByTagName('input')[i].checked =true;
        }

    }
  }
</code></pre>

<p>but it is not still working:(</p>

<p>the radio buttons are in a iframe, can it be the reason why the code is not working?</p>
