Javascript table

table.js

function table()
{
	var keys = [],
	    vals = [];

	function indexOf(key) {
		return keys.indexOf(key);
	}

	function get(key) {
		var index = indexOf(key);
		if(index == -1) {
			throw new Error('Key not found');
		}
		return vals[index];
	}

	function set(key, val) {
		var index = indexOf(key);
		if(index == -1) {
			index = keys.length;
			keys.push(key);
			vals.push(val);
		}
		vals[index] = val;
	}

	return {
		get: get,
		set: set
	};
}