function ChangeTruss(choice){
	var Trusses = ['Pony','Arch','Key','Cap','Conn','Link','Gate','Express','Cable']
	
	for (i=0; i<Trusses.length; i++)
	{
		if (Trusses[i] == choice)
			{
			document.getElementById(Trusses[i]).style.display='';
			}
		else
			{
			document.getElementById(Trusses[i]).style.display='none';
			}
	}
	if (choice == 'none')
		{
		document.getElementById('Pony').style.display='';
		}
}

function Setup(){
	document.TrussForm.TrussModelMenu[0].selected=true;
}