function Data(numQuestions,greyedOut)
	{
		this._dataArray = this.makeDataArray(numQuestions);
		this._displayControl = new DisplayControl(greyedOut,this);
	}
Data.prototype.update = function(id,q)
	{
		this._dataArray[q] = document.getElementById(id,q).value;
		//alert(this._dataArray);
		this._displayControl.shouldDisplay(q);
	}

Data.prototype.makeDataArray = function(numQuestions)
	{
		var arr = new Array("buffer")
		var i=1;
		while(i<=numQuestions)
			{
				arr[i] = "noValue";
				i++;
			}
		return arr;
	}