Intro
Does not leak.
function init()
{
createLinks();
var x = document.getElementsByTagName('a');
for (var i=0;i<x.length;i+=2)
{
if (!x[i].nextSibling) return;
x[i].relatedElement = x[i].nextSibling;
x[i].nextSibling.relatedElement = x[i];
}
}