// Ripped off from DarkHunter. Credit if reused.
function create_opt(aux)
{
	if(document.getElementById(aux).options[document.getElementById(aux).selectedIndex].value=="other")
		document.getElementById(aux+'_c').innerHTML='<input type="text" name="'+aux+'_c" size="20" maxlength="50" />'
	else
		document.getElementById(aux+'_c').innerHTML='<span id="'+aux+'_c"></span>';
}