jQuery.fn.innerwrap = function() {
	var a, args = arguments;
	return this.each(function() {
		if (!a)
			a = jQuery.clean(args, this.ownerDocument);
		// Clone the structure that we’re using to wrap
		var b = a[0].cloneNode(true),
		    c = b;
		// Find the deepest point in the wrap structure
		while ( b.firstChild )
			b = b.firstChild;
		// append the child nodes to the wrapper
		jQuery.each(this.childNodes, function(i, node) { 
			b.appendChild(node); 
		});
		jQuery(this)
			// clear the element
			.empty()
			// add the new wrapper with the previous child nodes appended
			.append(c);
	});
};