CodingForums.com - Regular Expression headache

I have a function that changes the label on a set of labels with similar "for" fields. Somehow, the matching is only matching every other label. I suspect I must be missing something obvious.

The goal is to change the text of a set of radio buttons to either "top" and "bottom" or "left" and "right" depending on orientation.

Code:

function ChangeLabels(orientation) {

        var lefttop =         "Left";

        var bottomright =         "Right";

    var lbls = document.getElementsByTagName("label");

    var lefttopregex = new RegExp ("Field6_[0-9]+", "gi");

    var bottomrightregex = new RegExp ("Field20_","gi");

    

    

    if (orientation == "Vertical") {

            lefttop = "Top";

            bottomright = "Bottom";

    }



  var forvalue = "";

  for (var i=0,k=lbls.length; i<k; i++) {

             forvalue = lbls[i].htmlFor;

    

           if (lefttopregex.test(forvalue)) {

                      lbls[i].innerHTML = lefttop;

    }

           if (bottomrightregex.test(forvalue)) {

                      lbls[i].innerHTML = bottomright;

    }

     

  }        

        

}

And here is the HTML of the labels.

Code:

<li id="fo1li6" class="     ">

<label class="desc" id="title6" for="Field6_0">

Left/Top

<span id="req_6" class="req">*</span>

</label>

<div>

<input id="radioDefault_6" name="Field6" type="hidden" value="" />

<span>

<input id="Field6_0" name="Field6" type="radio" class="field radio" value="Dogs" tabindex="20" onchange="handleInput(this);"  checked="checked" />

<label class="choice" for="Field6_0" >

Dogs</label>

</span>

<span>

<input id="Field6_1" name="Field6" type="radio" class="field radio" value="Pineapple" tabindex="21" onchange="handleInput(this);" />

<label class="choice" for="Field6_1" >

Pineapple</label>

</span>

<span>

<input id="Field6_2" name="Field6" type="radio" class="field radio" value="Leaves" tabindex="22" onchange="handleInput(this);" />

<label class="choice" for="Field6_2" >

Leaves</label>

</span>

<span>

<input id="Field6_3" name="Field6" type="radio" class="field radio" value="Cat" tabindex="23" onchange="handleInput(this);" />

<label class="choice" for="Field6_3" >

Cat</label>

</span>

<span>

<input id="Field6_4" name="Field6" type="radio" class="field radio" value="Star" tabindex="24" onchange="handleInput(this);" />

<label class="choice" for="Field6_4" >

Star</label>

</span>

<span>

<input id="Field6_5" name="Field6" type="radio" class="field radio" value="Bamboo &amp; Sun" tabindex="25" onchange="handleInput(this);" />

<label class="choice" for="Field6_5" >

Bamboo & Sun</label>

</span>

<span>

<input id="Field6_6" name="Field6" type="radio" class="field radio" value="Bamboo" tabindex="26" onchange="handleInput(this);" />

<label class="choice" for="Field6_6" >

Bamboo</label>

</span>

<span>

<input id="Field6_7" name="Field6" type="radio" class="field radio" value="Sun &amp; Moon" tabindex="27" onchange="handleInput(this);" />

<label class="choice" for="Field6_7" >

Sun & Moon</label>

</span>

<span>

<input id="Field6_8" name="Field6" type="radio" class="field radio" value="Fleur de lis" tabindex="28" onchange="handleInput(this);" />

<label class="choice" for="Field6_8" >

Fleur de lis</label>

</span>

<span>

<input id="Field6_9" name="Field6" type="radio" class="field radio" value="Dragonflies" tabindex="29" onchange="handleInput(this);" />

<label class="choice" for="Field6_9" >

Dragonflies</label>

</span>

<span>

<input id="Field6_10" name="Field6" type="radio" class="field radio" value="No Design" tabindex="30" onchange="handleInput(this);" />

<label class="choice" for="Field6_10" >

No Design</label>

</span>

</div>

</li>