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';        
   
} 

function tabSwitch_2(active, number, tab_prefix, content_prefix) {  
       
     for (var i=1; i < number+1; i++) {  
       document.getElementById(content_prefix+i).style.display = 'none';  
       document.getElementById(tab_prefix+i).className = '';  
     }  
     document.getElementById(content_prefix+active).style.display = 'block';  
     document.getElementById(tab_prefix+active).className = 'active';      
       
}