var hostname = 'easymailing.eu';
var loaderScriptId = 'easi-plugin-loader'; // you could encode the css path itself to generate id..
if (!document.getElementById(loaderScriptId)) {
var head = document.getElementsByTagName('head')[0];
var script = document.createElement('script');
script.id = loaderScriptId;
script.type = 'text/javascript';
script.src = '//' + hostname + '/frontend/easiplugin.php?load';
head.appendChild(script);
} else {
if (typeof loadframe !== "function") {
loadframe = function(){};
}
loadframe();
}