function showHideDiv(layername, state) {

   var element = document.getElementById?document.getElementById(layername):document.all?document.all[layername]:document.layers?document.layers[layername]:null;
   if (element == null) return;


   if (state) {

      if (element.style) {
         element.style.visibility = "visible";
         element.style.display = "block";
      }

   } else {

      if (element.style) {
         element.style.visibility = "hidden";
         element.style.display = "none";
      }
      
   }

}

function showHideTR(trname, state) {

   var element = document.getElementById?document.getElementById(trname):document.all?document.all[trname]:document.layers?document.layers[trname]:null;
   if (element == null) return;


   if (state) {

      if (element.style) {
         element.style.display = "";
      }

   } else {

      if (element.style) {
         element.style.display = "none";
      }
      
   }

}