Jquery how to count checked and disable checkboxes

Question

I am trying to disable all unchecked checkboxes when there are 5 checked checkboxes.

My code is not working here it is: http://jsfiddle.net/mtYtW/18/

My Jquery:

Answer 1

$("table input[type=checkbox]").click(function(){
    var countchecked = $("table input[type=checkbox]:checked").length;
    if(countchecked >= 5) {
        $("table input:checkbox").attr("disabled", true);
    }else{

    }
});

Working example: http://jsfiddle.net/Re5uy/6/