function show(id){
tag = document.getElementsByTagName("div")
   for(x=0; x<tag.length; x++){
	  if(tag[x].id.substr(0,2) == 'td'){
		 document.getElementById(tag[x].id).style.display = 'none';
	  }
   }
   document.getElementById(id).style.display = 'block';
}

function expand(id){
	if(document.getElementById(id).style.overflow == 'visible'){
		document.getElementById(id).style.overflow = 'hidden';
	} else {
		document.getElementById(id).style.overflow = 'visible';
	}
}
function tour(idon, idoff){
	if(document.getElementById(idon).style.display == 'block'){
		document.getElementById(idon).style.display = 'none';
	} else {
		document.getElementById(idon).style.display = 'block';
	}
	document.getElementById(idoff).style.display = 'none';
}
function contact(idon,idoff){
	if(document.getElementById(idon).style.display == 'block'){
		document.getElementById(idon).style.display = 'none';
	} else {
		document.getElementById(idon).style.display = 'block';
	}
	document.getElementById(idoff).style.display = 'none';
}