Hi, when you have a input element disabled for example:

<select id="textfield" name="" disabled="disabled">

<option value="1">a</option>

<option value="2">b</option>

</select>

and need change disabled attribute, with one checkbox...

<input type="checkbox" id="checkbox" onchange="out();"/>

and JS code...

function out(){

$("#textfield").removeAttr('disabled','disabled');

}

In FF we have no problem, but in IE7, after you click in the checkbox, you need to click hover the select to make the change.