public GeckoNode InsertBefore(GeckoNode newChild, GeckoNode before)
{
if (newChild == null)
{
throw new ArgumentNullException("newChild");
}
if (before == null)
{
throw new ArgumentNullException("before");
}
_DomObject.InsertBefore(newChild._DomObject, before._DomObject);
return(newChild);
}
