var NS4 = (document.layers) ? 1 : 0;
var IE4 = (document.all) ? 1 : 0;

function showInfo(rowId)
{
  var trInfo = (NS4) ? document[rowId] : document.all[rowId].style;
  trInfo.visibility = (NS4) ? "show" : "visible";
  trInfo.display = "inline";
}

function hideInfo(rowId)
{
  var trInfo = (NS4) ? document[rowId] : document.all[rowId].style;
  trInfo.visibility = (NS4) ? "hide" : "hidden";
  trInfo.display = "none";
}