function show_tab(staff){
  var georgie = document.getElementById('tab_georgie');
  var steven = document.getElementById('tab_steven');
  var daniel = document.getElementById('tab_daniel');
  var anna = document.getElementById('tab_anna');
  
  if(staff == "tab_georgie"){
	georgie.style.display = "";  
	steven.style.display = "none";  
	daniel.style.display = "none";  
	anna.style.display = "none";  
  } else if(staff == "tab_steven"){
	georgie.style.display = "none";  
	steven.style.display = "";  
	daniel.style.display = "none";  
	anna.style.display = "none";  
  } else if(staff == "tab_anna"){
	georgie.style.display = "none";  
	steven.style.display = "none";  
	daniel.style.display = "none";  
	anna.style.display = "";  
  } else if(staff == "tab_daniel"){
	georgie.style.display = "none";  
	steven.style.display = "none";  
	daniel.style.display = "";  
	anna.style.display = "none"; 
  } else if(staff == "none"){
	georgie.style.display = "none";  
	steven.style.display = "none";  
	daniel.style.display = "none";  
	anna.style.display = "none";  }
}