DocumentType docTypeNode = document.getImplementation()
.createDocumentType(doctype_qname, doctype_pubid, doctype_sysid);
if(document.getDoctype() != null){
document.removeChild(document.getDoctype());
}
document.insertBefore(docTypeNode, document.getFirstChild());
}
}
injectBaseTag(gadget, head);
injectGadgetBeacon(gadget, head, firstHeadChild);