swapNode equivalent in firefox

[neelesh.kalani]

Do we have any equivalent of swapNode method in firefox?

[mrhoo]

// You can write your own function and pass both nodes as arguments.

function swap(a, b){
	var pa1= a.parentNode, pa2= b.parentNode, sib= b.nextSibling;
	if(sib=== a) sib= sib.nextSibling;
	pa1.replaceChild(b, a);
	if(sib) pa2.insertBefore(a, sib);
	else pa2.appendChild(a);
	return true;
}