/**

* cbpAnimatedHeader.js v1.0.0
* http://www.codrops.com
*
* Licensed under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
* 
* Copyright 2013, Codrops
* http://www.codrops.com
*/

var cbpAnimatedHeader = (function() {

var docElem = document.documentElement,
        header = document.querySelector( '.navbar-fixed-top' ),
        didScroll = false,
        changeHeaderOn = 300;

function init() {
        window.addEventListener( 'scroll', function( event ) {
                if( !didScroll ) {
                        didScroll = true;
                        setTimeout( scrollPage, 250 );
                }
        }, false );
}

function scrollPage() {
        var sy = scrollY();
        if ( sy >= changeHeaderOn ) {
                classie.add( header, 'navbar-shrink' );
        }
        else {
                classie.remove( header, 'navbar-shrink' );
        }
        didScroll = false;
}

function scrollY() {
        return window.pageYOffset || docElem.scrollTop;
}

init();

})();