Can't Change Radio Selection, AJAX Loaded Form

I'm trying to write a progressively enhanced web application. I have an index page and a form with some select boxes and some radio buttons on a different php page. Before enhancement occurs, the form is accessible via regular links and everything works as expected. No issues.

In the enhanced version of the application, the form is AJAXed into the index page. When this occurs, the select boxes in the form work perfectly. The radio buttons are initially unchecked and I can check one option as usual. However, once one is checked, clicking the other radio options does nothing. I am unable to check a different option.

Anybody got a clue what the problem is?

Using Chrome by the way. Firefox is the same as Chrome. In IE I can't even check a radio button the first time.

Here's the code that's ajaxed in:

<label>First Time Buyer Status
<!--These values can't be 1/0 because 0 stands for not set-->
<input type="radio" name="FTB" id="FTBYes" value="1" <?php $M->checkFTBValue(1); ?> title=""/>First Time Buyer

[Code].....

The PHP script you see there checks if the value on the server matches the value of the radio button and echo's checked="checked" if true. I thought this could be causing the problem initially but the exact same code is used in the non-enhanced version and it works fine. I tried commenting it out anyway but it makes no difference.

The only thing I can think of is that some javascript is preventing me from selecting a different radio option. That would explain why it works ok in the non-enhanced version because there is no JS there. I can't find anything that I've written that might cause this effect I'm using jQuerys form plugin on my pages. I'm going to try writing it out and see if that fixes anything.

In the mean time, is there a way I can check if any JS functions when I click on the radio button?

Sorry if this is in the wrong forum, there's so many different languages involved, I hadn't a clue where to put it.