/* Scroll To Top Button */
define( ['jquery'], function ( $ ) {
	'use strict';

	/*
		By Osvaldas Valutis, www.osvaldas.info
		Available for use under the MIT License
	*/

	$.fn.doubleTapToGo = function( params ) {
		if( !( 'ontouchstart' in window ) && !navigator.msMaxTouchPoints && !navigator.userAgent.toLowerCase().match( /windows phone os 7/i ) ) return false;

		this.each( function() {
			var curItem = false;

			$( this ).on( 'click', function( e ) {
				var item = $( this );
				if( item[ 0 ] != curItem[ 0 ] ) {
					e.preventDefault();
					curItem = item;
				}
			});

			$( document ).on( 'click touchstart MSPointerDown', function( e ) {
				var resetItem = true,
					parents	  = $( e.target ).parents();

				for( var i = 0; i < parents.length; i++ )
					if( parents[ i ] == curItem[ 0 ] )
						resetItem = false;

				if( resetItem )
					curItem = false;
			});
		});
		return this;
	};
});