function receiveMessage(event) {
var html = event.data;
insertCards(html);
}
function insertCards(html) {
// Remove all previous content
while (document.body.hasChildNodes()) {
document.body.removeChild(document.body.lastChild);
}
// Create a div that holds all the received HTML
var div = document.createElement("div");
div.setAttribute("class", "output-container");
div.id = "output-container";
div.innerHTML = html;
// Add the new div to the document
document.body.appendChild(div);
}
window.addEventListener("message", receiveMessage, false);