var rowHighlight = true // turn on row highlights
  var colHighlight = true // turn off row highlights

  function getElement(el) {
    var tagList = new Object
    for (var i = 1; i < arguments.length; i++)
      tagList[arguments[i]] = true
    while ((el!=null) && (tagList[el.tagName]==null))
      el = el.parentElement
    return el
  }

  function checkHighlight(which) {
    var el = getElement(event.srcElement,"TH","TD")
    if (el==null) return
    if ((el.tagName=="TH") && (colHighlight)) {
      var idx = el.cellIndex
      var table = getElement(el, "TABLE")
      var column = table.all.tags("COL")[idx]
      if (which)
        column.className="cover"
      else
        column.className=""
    }      
    if ((el.tagName=="TD") && (rowHighlight)) {
      var row = getElement(el, "TR") 
      var table = getElement(row, "TABLE")
      if (which) 
        row.className = "rover"
      else
        row.className = ""
      cache = row
    }
  }