function tabSwitch(active, number, content_prefix, tab_prefix, img_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(img_prefix+i).src = "/images/"+i+"00.gif";
         
     }  
     document.getElementById(content_prefix+active).style.display = 'block';
     document.getElementById(tab_prefix+active).className = 'active';
     document.getElementById(img_prefix+active).src = "/images/"+active+"00_active.gif";

}