insert.js

/*
 * $(element).insert({ into: document.body });
 */

Element._insertionTranslations.into = function(element, node){
	node.appendChild(element);
};

/*
 * $(element).insert({ instead: element2 })
 */

Element._insertionTranslations.insert = function(element, node){
	node.parentNode.replaceChild(element, node);
};

/*
 * $(list).insert([item, item, item, item, item]);
 */
Element.addMethods({
    insert: Element.insert.wrap(function(insert, element, insertation){
        if (!Object.isArray(insertation)) return insert(element, insertation);

        element = $(element);
        insertation.each(insert.curry(element));
        return element;
    })
});

/* 
 * - using arguments
 * $(list).insert(item, item, item, item, item);
 */
Element.addMethods({
    insert: Element.insert.wrap(function(insert, element, insertation){
        if (arguments.length < 4) return insert(element, insertation);
 
        element = $(element);
        Array.prototype.slice.call(arguments, 2).each(insert.curry(element));
        return element;
    })
});