gistfile1.js

// Transmitter
var storedHeight = 0, payload;
setInterval(function() {
    var currentHeight = $('.ng-scope').height();
    
    if (currentHeight == storedHeight) {
        return false;
    } else {
        storedHeight = currentHeight;
        payload = JSON.stringify({ height: currentHeight });
        parent.postMessage(payload, "*");
    }
}, 100);


// Receiver
var resp;
eventer(messageEvent,function(e) {
    resp = JSON.parse(e.data);
    $('.cs-data').height(resp.height);
},false);