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+/*!
+ * classie - class helper functions
+ * from bonzo https://github.com/ded/bonzo
+ *
+ * classie.has( elem, 'my-class' ) -> true/false
+ * classie.add( elem, 'my-new-class' )
+ * classie.remove( elem, 'my-unwanted-class' )
+ * classie.toggle( elem, 'my-class' )
+ */
+
+/*jshint browser: true, strict: true, undef: true */
+/*global define: false */
+
+( function( window ) {
+
+'use strict';
+
+// class helper functions from bonzo https://github.com/ded/bonzo
+
+function classReg( className ) {
+ return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
+}
+
+// classList support for class management
+// altho to be fair, the api sucks because it won't accept multiple classes at once
+var hasClass, addClass, removeClass;
+
+if ( 'classList' in document.documentElement ) {
+ hasClass = function( elem, c ) {
+ return elem.classList.contains( c );
+ };
+ addClass = function( elem, c ) {
+ elem.classList.add( c );
+ };
+ removeClass = function( elem, c ) {
+ elem.classList.remove( c );
+ };
+}
+else {
+ hasClass = function( elem, c ) {
+ return classReg( c ).test( elem.className );
+ };
+ addClass = function( elem, c ) {
+ if ( !hasClass( elem, c ) ) {
+ elem.className = elem.className + ' ' + c;
+ }
+ };
+ removeClass = function( elem, c ) {
+ elem.className = elem.className.replace( classReg( c ), ' ' );
+ };
+}
+
+function toggleClass( elem, c ) {
+ var fn = hasClass( elem, c ) ? removeClass : addClass;
+ fn( elem, c );
+}
+
+var classie = {
+ // full names
+ hasClass: hasClass,
+ addClass: addClass,
+ removeClass: removeClass,
+ toggleClass: toggleClass,
+ // short names
+ has: hasClass,
+ add: addClass,
+ remove: removeClass,
+ toggle: toggleClass
+};
+
+// transport
+if ( typeof define === 'function' && define.amd ) {
+ // AMD
+ define( classie );
+} else {
+ // browser global
+ window.classie = classie;
+}
+
+})( window );