I have simple click on checkbox
jQuery('#some_div .checkbox').click(function(){
console.log(jQuery(this));
console.log(jQuery(this).val());
//....
<input type="checkbox" value="15" class="checkbox" >
But on windows this does not work.
Mac FireFox 17.0.1

Win FireFox 17.0.1

Same in IE. Chrome works fine.
My guess is you’re not using the proper event listener.
You should use
.select()instead of.click().