JS: Resizes Genesis Footer Widgets to Equal Heights (responsively)

footer-widgets-height.js

/*
 * reFooterWidgets
 * 
 * Resize Selector (e.g. Genesis Footer Widgets) to Equal Heights
 *
 * @author Travis Smith
 * @version 1.0.0
 */
 

'use strict';
// Get current browser width
var browserWidth = jQuery(window).width();

// Responsive: Get Width
jQuery(window).resize(function() {
	browserWidth = jQuery(this).width();
	
	// Set size of footer-widgets-*
	selectorSizing( browserWidth );
});

/*
 * Resizes the selector to the designated size
 *
 * @param int    size     Browser Size to do nothing
 * @param string selector Selector, defaults to '#footer-widgets .widget-area'
 */
function selectorSizing( size, selector ) {
	'use strict'; 
	var heights = [];
	
	// selector as optional argument
	if ( !selector)
		var selector = '#footer-widgets .widget-area';
	
	// size is required
	if ( !size)
		return false;
	
	// Responsive Code
	// Widgets move to 100% width if width of the browser window is < 960px
	// Done via @media only screen and (max-width: 960px) { } in style.css
	if( 960 < size ) {
		jQuery(selector).each( function( index, value ) {
			heights[index] = jQuery(this).height();
		});

		// Set max height
		var max = Math.max.apply( Math, heights );

		// Assign max height to the footer-widgets
		jQuery(selector).each( function( index, value ) {
			jQuery(this).height(max);
		});
	}
	else {
		// Remove max height to the footer-widgets
		jQuery(selector).each( function( index, value ) {
			jQuery(this).height('auto');
		});
	}
}

selectorSizing( browserWidth );

functions.php

<?php

add_action( 'wp_enqueue_scripts', 'wps_enqueue_refooterwidgets' , 15 );
/*
 * Enqueue reFooterWidgets to the footer
 * 
 */
function wps_enqueue_refooterwidgets() {
	wp_enqueue_script( 'wps-footer-widgets-height' , get_stylesheet_directory() . '/js/footer-widgets-height.js' , NULL , '1.0.0' , true );
}

Remove use strict from line 11. Applying it globally is asking for trouble. Move it to line 16.5.

Also consider running this code through JSHint and JSLint to apply some common code standards.