var documentBase = document.location;

function changeRacecar()
{
	var form = document.forms['rececarsForm'];
	if (form)
	{
		var car = form['iCar'];
		if (car)
		{
			if (car.selectedIndex>0)
			{				
				var newBase = documentBase + car.options[car.selectedIndex].value + '/';				
				document.location = newBase;
			}						
		}		
	}
	return true;
}