focus event of tabs
JavaScript
/*
http://stackoverflow.com/questions/12325519/using-jquery-to-attach-a-listener-to-top-window-focus-events-inside-an-iframe
*/
var doc = window.top.document;
var win = window.top;
win.onfocus = function() { console.log('Focus'); };
win.onblur = function() { console.log('Blur'); };
//doc.onmousemove = function() { console.log('Move'); };