Want to your site to make analogue sajewich buttons. Button is displayed in an iframe and everything works well, but the question is: how to do event tracking? The fact that you included the code for the button is on a different domain (which is natural) and call the callback from the iframe directly I can't.
As does Facebook, Google and all the rest???
Clarification: I know that it is possible to hang the onLoad on the iframe and change the window.location.href inside of it, but I do not want to do without reloading the iframe