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 countcheck = $('table input[type="checkbox"]:checked').length;
    if(countcheck > 4) {
        $("table input:checkbox:not(:checked)").attr("disabled", true);
    }else
    {
        $("table input:checkbox").attr("disabled", false);
    }
});

Working Example: http://jsfiddle.net/mtYtW/48/

NOTE: This code will enable the checkboxes if you deselect one of the five!