jQuery AJAX Load is an helper module for easy loading any content using build in jQuery load function.
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.
Optionally css and js files could be loaded or not. Loading those files has an effect on performance, so load those only if needed.
It comes with a set of modules that uses the functionality for: