$(document).ready(function() {
   
    // Make the sidebar height the same size as the content height
    // (so the sidebar background flows all the way down)
    var content_height = $("#content_container").height();
    var sidebar_height = $("#sidebar .sb_content_container").height();
    if (content_height-20 > sidebar_height) 
    $("#sidebar .sb_content_container").height(content_height-50);
    
});