/*************** 导航************/
      GZDiv   =   '1'; 
    
     function   GZShowDiv(id){          
          current   =   id; 
          if(GZDiv   &&   GZDiv   !=   current)  
                    document.getElementById(GZDiv).style.display   =   'none';  
          document.getElementById(current).style.display   =   'block';  
          GZDiv   =   current;  
 
    }

/*************************************************/

    CZDiv   =   'czyuwen'; 
    
     function   CZShowDiv(id){          
          current   =   id; 
          if(CZDiv   &&   CZDiv   !=   current)  
                    document.getElementById(CZDiv).style.display   =   'none';  
          document.getElementById(current).style.display   =   'block';  
          CZDiv   =   current;  
 
    }