HTTPS issue

Hi there,

In this plugin in the function get_plugin_directory is used the const WP_PLUGIN_URL to get the website URL but that solution doesn’t make possible for the user to switch between https and http because it always take the http.

Therefore we would really appreciate if you can use the plugin_dir_url( __FILE__ ); as a return value instead of WP_PLUGIN_URL . ‘/jquery-vertical-accordion-menu’

http://wordpress.org/extend/plugins/wp-jquery-accordion-menu/