function ShowHideQtabs( a ) {
  var qtabClicked= document.getElementById( a );
  
  switch ( qtabClicked.id ) {
    case 'qtab-text-1':
	  document.getElementById( "li-qtab-1" ).className= "active";
	  document.getElementById( "li-qtab-2" ).className= "none"; 
	  document.getElementById( "li-qtab-3" ).className= "none"; 
	  document.getElementById( "li-qtab-4" ).className= "none"; 

	  document.getElementById( "qtab-text-1" ).style.display= "inline";
	  document.getElementById( "qtab-text-2" ).style.display= "none";
	  document.getElementById( "qtab-text-3" ).style.display= "none";
	  document.getElementById( "qtab-text-4" ).style.display= "none";

	  break;
	  
	case 'qtab-text-2':
	  document.getElementById( "li-qtab-1" ).className= "none";
	  document.getElementById( "li-qtab-2" ).className= "active"; 
	  document.getElementById( "li-qtab-3" ).className= "none"; 
	  document.getElementById( "li-qtab-4" ).className= "none"; 

	  document.getElementById( "qtab-text-1" ).style.display= "none";
	  document.getElementById( "qtab-text-2" ).style.display= "inline";
	  document.getElementById( "qtab-text-3" ).style.display= "none";
	  document.getElementById( "qtab-text-4" ).style.display= "none";

	  break;

	case 'qtab-text-3':
	  document.getElementById( "li-qtab-1" ).className= "none";
	  document.getElementById( "li-qtab-2" ).className= "none"; 
	  document.getElementById( "li-qtab-3" ).className= "active"; 
	  document.getElementById( "li-qtab-4" ).className= "none"; 

	  document.getElementById( "qtab-text-1" ).style.display= "none";
	  document.getElementById( "qtab-text-2" ).style.display= "none";
	  document.getElementById( "qtab-text-3" ).style.display= "inline";
	  document.getElementById( "qtab-text-4" ).style.display= "none";
	  break;
	  
	case 'qtab-text-4':
	  document.getElementById( "li-qtab-1" ).className= "none";
	  document.getElementById( "li-qtab-2" ).className= "none"; 
	  document.getElementById( "li-qtab-3" ).className= "none"; 
	  document.getElementById( "li-qtab-4" ).className= "active"; 
	  
	  document.getElementById( "qtab-text-1" ).style.display= "none";
	  document.getElementById( "qtab-text-2" ).style.display= "none";
	  document.getElementById( "qtab-text-3" ).style.display= "none";
	  document.getElementById( "qtab-text-4" ).style.display= "inline";
	  
	  break;

  }

  return true;
}