/**
 * menu.js v1.0.0
 * http://www.codrops.com
 *
 * Licensed under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * Copyright 2014, Codrops
 * http://www.codrops.com
 */
;( function( window ) {
 'use strict';
 function extend( a, b ) {
  for( var key in b ) { 
   if( b.hasOwnProperty( key ) ) {
    a[key] = b[key];
   }
  }
  return a;
 }
 function DotNav( el, options ) {
  this.nav = el;
  this.options = extend( {}, this.options );
    extend( this.options, options );
    this._init();
 }
 DotNav.prototype.options = {};
 DotNav.prototype._init = function() {
  // special case "dotstyle-hop"
  var hop = this.nav.parentNode.className.indexOf( 'dotstyle-hop' ) !== -1;
  var dots = [].slice.call( this.nav.querySelectorAll( 'li' ) ), current = 0, self = this;
  dots.forEach( function( dot, idx ) {
   dot.addEventListener( 'click', function( ev ) {
    ev.preventDefault();
    if( idx !== current ) {
     dots[ current ].className = '';
     // special case
     if( hop && idx < current ) {
      dot.className += ' current-from-right';
     }
     setTimeout( function() {
      dot.className += ' current';
      current = idx;
      if( typeof self.options.callback === 'function' ) {
       self.options.callback( current );
      }
     }, 25 );      
    }
   } );
  } );
 }
 // add to global namespace
 window.DotNav = DotNav;
})( window );