function checkAll(fname){
   mode=eval("document."+fname+".checkall.checked");
   count = eval("document."+fname+".length")
   for (var i=0;i<count;i++){
      eval("document."+fname+".elements["+i+"].checked="+mode);
      }
}

function doccheckAll(fname){
   mode=eval("document."+fname+".doccheckall.checked");
   count = eval("document."+fname+".length")
   for (var i=0;i<count;i++){
      eval("document."+fname+".elements["+i+"].checked="+mode);
      }
}