// JavaScript Document
function tabSwitch(new_tab, new_content) {  
      
   document.getElementById('content_1').style.display = 'none';  
   document.getElementById('content_2').style.display = 'none';  
   document.getElementById('content_3').style.display = 'none';          
   document.getElementById(new_content).style.display = 'block';            
  
  document.getElementById('tab_1').className = '';  
  document.getElementById('tab_2').className = '';  
  document.getElementById('tab_3').className = '';          
  document.getElementById(new_tab).className = 'active';        
   
}