<!--hide// class navigation routines// t.w.wolfgang may 21, 1998// go to previous classfunction goPrev()	{	var newcabin = document.forms[0].elements[1].selectedIndex	-- newcabin	if (newcabin < 0)		{		newcabin = document.forms[0].elements[1].length - 1		}	document.forms[0].elements[1].selectedIndex = newcabin	goClass()	}// go to selected classfunction goClass()	{	var carclass = document.forms[0].carclass.options[document.forms[0].carclass.selectedIndex].text	var classURL = carclass + ".htm"	window.location = classURL	}// go to next classfunction goNext()	{	var newcabin = document.forms[0].elements[1].selectedIndex	++ newcabin	if (newcabin > document.forms[0].elements[1].length - 1)		{		newcabin = 0		}	document.forms[0].elements[1].selectedIndex = newcabin	goClass()	}//stop hiding -->