Tracks default and custom click-through interactions.

Click-through interactions measure events that click-through to the default URL or the specified URL.

adkit.onReady(function() {
 /* default clickthrough */
 adkit.clickthrough(); /* custom clickthrough with platform defined url */
 adkit.clickthrough("myCustomInt"); /* custom clickthrough with custom url*/
 adkit.clickthrough("myCustomInt", "http://www.sizmek.com");
});