function rowstyle(e) {
  row = this;
  if (row.stylecache == null) switchto = 'tr2';
  else switchto = row.stylecache;
  row.stylecache=row.className;
  row.className=switchto;
}

function setrowhandlers() {
  allrows = document.getElementsByTagName("tr");
  for (i = 0; i < allrows.length; i++) {
    row = allrows[i];
    if (row.className == 'tr0' || row.className == 'tr1') {
      if (document.addEventListener) {
        row.addEventListener('click', rowstyle, false);
      }
      //else if (document.attachEvent) {
      //  row.attachEvent('onclick', rowstyle);
      //}
      else {
        row.onclick = rowstyle;
      }
    }
  }
}