function inputCollection() {
	this.collection = new Array();
	this.indexes = new Array();
	
	this.exists = function( inputObj ) {
		return this.indexes[ inputObj.ident ] != null;
	}
	
	this.add = function( inputObj ) {
		if (!this.exists(inputObj)) {
			this.collection[ this.collection.length ] = inputObj;
			this.indexes[ inputObj.ident ] = inputObj
		}
	}
	
	this.get = function( ident ) {
		if (this.indexes[ident] != null) return this.indexes[ident];
		else return null;
	}
}