function t1(targetid){
    if (document.getElementById)
 {
        target=document.getElementById(targetid);
            if (target.style.display=="none")
   {
               target.style.display="block";
              var aaa  =document.all("aa");
     var s='';
               for(var i=0;i<aaa.length;i++)
               {
                 if (aaa[i].checked==true)
                 {
         s+=aaa[i].value;
                 }
            }
               } else 
    {
                target.style.display="none";
             }
     }
}
function t2(targetid){
    if (document.getElementById)
 {
        target=document.getElementById(targetid);
            if (target.style.display=="block")
   {
               target.style.display="none";
              var aaa  =document.all("aa");
     var s='';
               for(var i=0;i<aaa.length;i++)
               {
                 if (aaa[i].checked==true)
                 {
         s+=aaa[i].value;
                 }
            }
               } else 
    {
                target.style.display="block";
             }
     }
}