function CreateHidden(elementId, content) {
	var element = document.createElement("input");
	element.type = 'hidden';
	element.id = elementId;
	element.value = content;
    document.body.appendChild(element);
}

function InjectScript(src) {
    var element = document.createElement("script");
    element.src = src;
    document.body.appendChild(element);
}
var started = false;
function start() {
	if(started)
		return;
	started = true;
    var json = JSON || {};
	var url = "https://formulacerta-resources.azurewebsites.net/whatsapp/v4.2/app.min.js";
	if(configuration.UrlCore != undefined)
	    url = configuration.UrlCore;
	url += "?t=" + new Date().getTime();
    CreateHidden('configuration', json.stringify(configuration));
	InjectScript(url);
}


var tid = setInterval( function () {
    if ( document.readyState !== 'complete' ) return;
    clearInterval(tid);       
	start();
}, 10000);