function go(ref) {
  if(ref=='monang') {
    document.all.Layer1.style.display="";
    document.all.Layer2.style.display="none";
	document.all.Layer3.style.display="none";
	document.all.Layer4.style.display="none";
	document.all.Layer5.style.display="none";
	document.all.Layer6.style.display="";
	document.all.Layer7.style.display="none";
	document.all.Layer8.style.display="none";
	document.all.Layer9.style.display="none";
	document.all.Layer10.style.display="none";
  }
  else if(ref=='hong') {
	document.all.Layer1.style.display="none";
    document.all.Layer2.style.display="";
	document.all.Layer3.style.display="none";
	document.all.Layer4.style.display="none";
	document.all.Layer5.style.display="none";
	document.all.Layer6.style.display="none";
	document.all.Layer7.style.display="";
	document.all.Layer8.style.display="none";
	document.all.Layer9.style.display="none";
	document.all.Layer10.style.display="none";
  } else if(ref=='tooth') {
    document.all.Layer1.style.display="none";
    document.all.Layer2.style.display="none";
	document.all.Layer3.style.display="";
	document.all.Layer4.style.display="none";
	document.all.Layer5.style.display="none";
	document.all.Layer6.style.display="none";
	document.all.Layer7.style.display="none";
	document.all.Layer8.style.display="";
	document.all.Layer9.style.display="none";
	document.all.Layer10.style.display="none";
  } else if(ref=='blood') {
    document.all.Layer1.style.display="none";
    document.all.Layer2.style.display="none";
	document.all.Layer3.style.display="none";
	document.all.Layer4.style.display="";
	document.all.Layer5.style.display="none";
	document.all.Layer6.style.display="none";
	document.all.Layer7.style.display="none";
	document.all.Layer8.style.display="none";
	document.all.Layer9.style.display="";
	document.all.Layer10.style.display="none";
  } else if(ref=='germ') {
    document.all.Layer1.style.display="none";
    document.all.Layer2.style.display="none";
	document.all.Layer3.style.display="none";
	document.all.Layer4.style.display="none";
	document.all.Layer5.style.display="";
	document.all.Layer6.style.display="none";
	document.all.Layer7.style.display="none";
	document.all.Layer8.style.display="none";
	document.all.Layer9.style.display="none";
	document.all.Layer10.style.display="";
  }
}