function show_td(e_table) {
   if(document.getElementById) {
      var id_table = document.getElementById(e_table).style;

      //Set the object to table-cell if the browser is
      //Firefox and block if it's anything else.
      if(navigator.userAgent.indexOf("Firefox") != -1){
         if(id_table.display == "table-cell") {
         }
         else {
            id_table.display = "table-cell";
         }
      }
      else {
         if(id_table.display == "block") {
         }
         else {
            id_table.display = "block";
         }
      }
      return false;
   }
   else {
      return true;
   }
}