Detect Click into Iframe using JavaScript

Question

I understand that it is not possible to tell what the user is doing inside an iframe if it is cross domain. What I would like to do is track if the user clicke

Answer 1

This is small solution that works in all browsers even IE8:

var monitor = setInterval(function(){
    var elem = document.activeElement;
    if(elem && elem.tagName == 'IFRAME'){
        clearInterval(monitor);
        alert('clicked!');
    }
}, 100);

You can test it here: http://jsfiddle.net/oqjgzsm0/