Matching a sidebars height to the content

sidebar_height.js

var correctSidebarBorderHeight = function() {
    var sidebar       = $('.sidebar');
    var sidebarHeight = sidebar.height();
    var content       = $('.body_content');
    var contentHeight = content.height();

    if( sidebarHeight < contentHeight ) {
        sidebar.css('height', contentHeight);
    }
};