Add radio input dynamically to jQuery Mobile fieldset controlgroup

I’ve seen variations on this question yet not my specific case on SO, so here goes.

I’m having trouble adding a new radio input dynamically to an existing control group using jQuery Mobile. It will add, yet the style is not correct & it doesn’t appear to interact with the other inputs correctly.

Here’s my fiddle:
http://jsfiddle.net/cjindustries/3mQF6/

Can anyone see what I’m doing wrong? Or is is a case of regenerating the whole fieldset /controlgroup again? 🙁

Thanks! Code below too…

        <div id="testPage" data-role="page">        <div data-role="content">    <fieldset data-role="controlgroup">        <legend>Radio buttons, vertical controlgroup:</legend>            <input type="radio" name="radio-choice-1" id="radio-choice-1" value="choice-1" checked="checked">            <label for="radio-choice-1">Cat</label>            <input type="radio" name="radio-choice-1" id="radio-choice-2" value="choice-2">            <label for="radio-choice-2">Dog</label>            <input type="radio" name="radio-choice-1" id="radio-choice-3" value="choice-3">            <label for="radio-choice-3">Hamster</label>            <input type="radio" name="radio-choice-1" id="radio-choice-4" value="choice-4">            <label for="radio-choice-4">Lizard</label>    </fieldset>        </div>    </div>$('<input type="radio" name="radio-choice-5" id="radio-choice-5"><label for="radio-choice-5">Horse</label>')    .appendTo("fieldset");$("fieldset").trigger('create');

You need to use name="radio-choice-1" as you have used in above. This solves you behavior problem

Behavior problem solved with below change
Your modified code for dynamically adding radio.

 $('<input type="radio" name="radio-choice-1" id="radio-choice-5"><label for="radio-choice-5">Horse</label>').appendTo("fieldset");

Style problem solved with below change
Just recreate div instead of fieldset

 $("div").trigger('create');

Check Fiddle Demo

What is the difference when assigning a bash variable value with this syntax?

Sorry if this is something really simple or has already been asked, yet due to the nature of the question I cannot think of any search terms to put on search engines.

Lately I have seen some bash scripts that they assign variable values like this:

$ MY_BASH_VAR=${MY_BASH_VAR:-myvalue}$ echo "$MY_BASH_VAR"myvalue

What is the difference from the most usual way of assigning a value like this:

MY_BASH_VAR=myvalue$ echo "$MY_BASH_VAR"myvalue

You can look at http://linux.die.net/man/1/bash

${parameter:-word}  Use Default Values. If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of parameter is substituted.

This provides a default value : MY_BASH_VAR keeps its value if defined otherwise, it takes the default “myvalue”

bruce@lorien:~$ A=42bruce@lorien:~$ A=${A:-5}bruce@lorien:~$ echo $A42