How to replace the Spry Element selector engine

SpryElementSelectorReplace.js

Spry.$$ = function( selectorSequence, rootNode )
{
	var matches = [];
	
	Spry.$$.addExtensions( matches );

	// If the first argument to $$() is an object, it
	// is assumed that all args are either a DOM element
	// or an array of DOM elements, in which case we
	// simply append all DOM elements to our special
	// matches array and return immediately.

	if (typeof arguments[0] == "object")
	{
		for (var i = 0; i < arguments.length; i++)
		{
			if (arguments[i].constructor == Array)
				matches.push.apply(matches, arguments[i]);
			else
				matches.push(arguments[i]);
		}
		return matches;
	}

	if (!rootNode)
		rootNode = document;
	else
		rootNode = Spry.$(rootNode);

	for( var nodes = Sizzle( selectorSequence, rootNode ), length = nodes.length, i = 0; i < length; i++ ){
		matches.push( nodes[i] );
	}
	return matches;
};

Example of how to replace the existing Spry selector engine with a new one. In the example above I'm using Sizzle ( http://github.com/jeresig/sizzle/ );
You need to replace the above code with the existing Spry.$$ function. After that you can remove the Spry.$$ tokenizer. And your ready to go. :)