Portability of nextElementSibling/nextSibling

Question

I\'m currently writing an accordion and running into the same problem as described in nextSibling difference between IE and FF? - specifically differences between Microsoft\

Answer 1

Firefox nextSibling returns whitespace \n while Internet Explorer does not.

Before nextElementSibling was introduced, we had to do something like this:

var element2 = document.getElementById("xxx").nextSibling;
while (element2.nodeType !=1)
{
          element2 = element2.nextSibling;
}