Just a little snippet I worked up that may be useful to someone …
jQuery(document).ready(function($){
$('div#checkall-wrapper input[type=checkbox]').click(function(){
if( $(this).attr('checked') ){
$('tdiv#wraparound-targets input[type=checkbox]').attr('checked','checked');
}else{
$('div#wraparound-targets input[type=checkbox]').removeAttr('checked');
}
});
});
Make sense?
George Stephanis 
Nice tip!
This is how I would have done it in your case:
targets = $('div#wraparound-targets input[type=checkbox]'); $(this).attr('checked') ? targets.attr('checked', 'checked') : targets.removeAttr('checked');Yup, makes sense. I just know that a lot of people have a hard time understanding the ternary operator, so I wrote it out longhand.