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// Prototype $ function.

function $() {

var elements = new Array();

for(var i = 0; i < arguments.length; i++) {

var element = arguments[i];

if(typeof element == 'string')

element = document.getElementById(element);

if(arguments.length == 1)

return element;

elements.push(element);

}

return elements;

}

/* YUI get method. */

YAHOO.util.Dom.get = function(el) {

if(YAHOO.lang.isString(el)) {

return document.getElementById(el);

}

if(YAHOO.lang.isArray(el)) {

var c = [];

for(var i = 0, len = el.length; i < len; ++i) {

c[c.length] = Y.Dom.get(el[i]);

}

return c;

}

if(el) {

return el;

}

return null;

};

function PrototypeToYUIAdapter() {

return YAHOO.util.Dom.get(arguments);

}

function YUIToPrototypeAdapter(el) {

return $.apply(window, el);

}

$ = PrototypeToYUIAdapter;

or vice-versa, for those who are migrating from YUI to Prototype:

YAHOO.util.Dom.get = YUIToPrototypeAdapter;