I can't figure out what is going on here. I have some nested lists of checkboxes that I would like to check when the parent is checked. More importantly, I can't even get the alert to show up. It's as if the click event is not firing. Any ideas? $(document).ready(function() { $("#part_mapper_list input[type=checkbox]").click(function(){ alert("clicked"); if ($(this).attr("checked") == "checked"){ $(this + " input").attr("checked") = "checked"; } else { $(this + " input").attr("checked") = ""; } }); }