Could someone tell me why this code works in IE 6 but not Netscape 7.2?
<pre>

<form name="rightarmform">
<select name="rightarmlinks" onChange="document.getElementById('rightarm').src
=document.rightarmform.rightarmlinks.options.v
alue;iframe.history.go()">
<option value="images/mm/rightarm-blue.gif">Blue
<option value="images/mm/rightarm-red.gif">Red
</s
elect>
</form>

</pre>