function show(type) {
  if (type=="contact") {
	document.all.main.style.display    = 'none';
	document.all.contact.style.display = '';
  }
  else if (type=="home") {
    document.all.main.style.display    = '';
	document.all.contact.style.display = 'none';
  }
  else if (type=="search") {
    if (document.all.search.style.display=='none') document.all.search.style.display='';
	else document.all.search.style.display='none';
  }
 return false
}