jQuery toggle attribute

toggleAttr.js

(function ($) {
    $.fn.toggleAttr = function (attr, val1, val2) {
        ///<summary>Toggles an attribute between having one of two possible states</summary>
        ///<param name="attr">Attribute name</param>
        ///<param name="val1">First value</param>
        ///<param name="val2">Second value</param>
 
        return this.each(function () {
            var $this = $(this);
            if ($this.attr(attr) === val1) {
                $this.attr(attr, val2);
            } else {
                $this.attr(attr, val1);
            }
        });
    };
}
)(jQuery);