Jquery为单选框checkbox绑定单击click事件

<dd id="1">
<input id="checkbox-518" class="imagezz" name type="checkbox" value="518">
</dd>

var $test_image_check_box_click = function() {
if ($(this).attr("checked") == "checked") {
$(this).parent().css({"background":"#dcf4fc"});
}
else {
$(this).parent().css({"background":"#fcf7c7"});
}
check_all_imagezz();
}

$(#checkbox-518).click($test_image_check_box_click);

$(document).ready(function(){
$(".imagezz").click($test_image_check_box_click);
}