jQuery AJAX Load is an helper module for easy loading any content using build in jQuery load function. It allows you for a quick and easy Ajax integration.
Just enable the module and add class .jquey_ajax_load to any link, URL content (without other regions) will be loaded on #jquery_ajax_load_target element. Those classes and id could be personalized to your needs. Target element coould be set on a per-link basis using the data-target attribute to define a valid jQuery ID.
See also:
http://www.stevepolitodesign.com/blog/load-content-drupal-ajax-without-c...