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/*!
 * toggleAttr() jQuery plugin
 * @link http://github.com/mathiasbynens/toggleAttr-jQuery-Plugin
 * @description Used to toggle selected="selected", disabled="disabled", checked="checked" etc…
 * @author Mathias Bynens <http://mathiasbynens.be/>
 */
jQuery.fn.toggleAttr = function(attr) {
 return this.each(function() {
  var $this = $(this);
  $this.attr(attr) ? $this.removeAttr(attr) : $this.attr(attr, attr);
 });
};