MiniRacer - Extending W3C DOM Elements using JavaScript (IE)

// SpeedSelector is a wrap around class for the speed select element
// on the web-page. The id of the select element is passed in on construction

function SpeedSelector(id)
{
 this.init(id);
}

SpeedSelector.prototype.init = SpeedSelector_init;
SpeedSelector.prototype.getSpeed = SpeedSelector_getSpeed;

function SpeedSelector_init(id)
{
	this._selectElement = document.getElementById("speedSelect");
}

function SpeedSelector_getSpeed()
{
	return this._selectElement[this._selectElement.selectedIndex].value;
}