jquery.adjust_height_with_sidebar.js

// jQuery plugin
//  - will adjust a content area to be at least as
//    tall as the sidebar area
//  Ex:
//   $('#content').adjustHeightWithSidebar()
//   $('#content').adjustHeightWithSidebar({sidebar_selector: '#side-bar'})

(function($) {
  $.fn.adjustHeightWithSidebar = function(options) {
    settings = $.extend({
      sidebar_selector: '#sidebar'
    }, options)
    
    var content_height = $(this).height(),
        sidebar_height = $(settings.sidebar_selector).height()
    
    return this.each(function() {
      if (sidebar_height > content_height)
        $(this).height(sidebar_height)
    })
  }
})(jQuery)