function check(obj){
      if (document.getElementById(obj).style.display=='none') {
         document.getElementById(obj).style.display='block'; 
      }
      else document.getElementById(obj).style.display='none';   
   }

   function blockOver (obj){
      obj.style.cursor='hand';
      obj.style.borderWidth=1; 
      obj.style.backgroundColor="#E6F7FD";
      obj.style.color="000077";
//      obj.style.fontWeight="bold";  
   }

   function blockOut (obj){
      obj.style.borderWidth=1;  
      obj.style.backgroundColor="#FFFFFF";
      obj.style.color="000044";
//      obj.style.fontWeight="normal";  
   }