$ function actually use document.getElementById to get the object. This DOM method has been misunderstood by IE and Opera, it will use the input's name as its id number and be found by getElementById method, I hate that, so I write a bug fixed $ function: function $(element) { if (arguments.length > 1) { for (var i = 0, elements = [], length = arguments.length; i < length; i++) elements.push($(arguments[i])); return elements; } if (typeof element == 'string') { var id=element; element = document.getElementById(element); if(!element.id || element.id!=id) element=$$("*").detect(function(node){return node.id==id}) } return Element.extend(element); } This $ function can only get the object with id attribute, I hope it can be added into the Prototype.
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