I have a form with several rows and each has a text box labeled 'Status'. The user should be able to change the value of Status, then click Save and a GET query will be run in an iframe without interrupting the browser window. To do this I am using a onkeydown event so the Save button's (which is an a href link) href address is changed to what is in the box. But I can't get the box's value to change!
I have spent several hours at this now and I'm a bit exasperated. Could someone please take a look and tell me what I am doing wrong?

The crucial bit is bold.

<form name='form4'>
<input type=text size=8 name='4'
value='' onkeydown="document.links['href4'].href == 'this.value'" 

<style type="text/css">
  margin: 0px 20px 0px 20px;
  display: none;

<div id="saveenq4">

  <a id="href4" target='RSIFrame'>Save</a>

<script type="text/javascript">
function toggleLayer( whichLayer )
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( whichLayer );
  else if( document.all ) // this is the way old msie versions work
      elem = document.all[whichLayer];
  else if( document.layers ) // this is the way nn4 works
    elem = document.layers[whichLayer];
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';

function handleResponse(a) {
  alert('enquiry ' + a)

function changeLink () {
  sel = document.addresses.list.selectedIndex;
  document.links[pos].href = document.addresses.list[sel].value;


<iframe id="RSIFrame"
  style="width:110px; height:110px; border: 0px"