document.onmouseover = doDocumentOnMouseOver ;
  document.onmouseout = doDocumentOnMouseOut ;

  function doDocumentOnMouseOver() {
    var eSrc = window.event.srcElement ;
    if (eSrc.className == "item") {
      window.event.srcElement.className = "highlight";
    }
  }

  function doDocumentOnMouseOut() {
    var eSrc = window.event.srcElement ;
    if (eSrc.className == "highlight") {
      window.event.srcElement.className = "item";
    }
  }

var bV=parseInt(navigator.appVersion);
NS4=(document.layers) ? true : false;
IE4=((document.all)&&(bV>=4)) ? true : false;
DOM=(!document.layers && !document.all && bV>=4) ? true : false; // A hack to guess if the browser supports the DOM
capable = (NS4 || IE4 || DOM) ? true : false;

function expandIt(){return}
function expandAll(){return}

isExpanded = false;

function getIndex(el) {
  ind = null;
  for (i=0; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    if (whichEl.id == el) {
      ind = i;
      break;
    }
  }
  return ind;
}

function arrange() {
  nextY = document.layers[firstInd].pageY + document.layers[firstInd].document.height;
  for (i=firstInd+1; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    if (whichEl.visibility != "hide") {
      whichEl.pageY = nextY;
      nextY += whichEl.document.height;
    }
  }
}

function initIt(){
  if (NS4) {
    for (i=0; i<document.layers.length; i++) {
      whichEl = document.layers[i];
      if (whichEl.id.indexOf("Child") != -1) whichEl.visibility = "hide";
    }
    arrange();
  } else if(IE4) {
    tempColl = document.all.tags("DIV");
    for (i=0; i<tempColl.length; i++) {
      if (tempColl(i).className == "child") tempColl(i).style.display = "none";
    }
  } else if(DOM) {
    tempColl = document.getElementsByTagName("DIV");
    for (i=0; i<tempColl.length; i++) {
      if (tempColl(i).className == "child") tempColl(i).style.visibility = "hidden";
    }
  }
}

function expandIt(el) {
  if (!capable) return;
  if (IE4) {
    expandIE(el);
  } else if(NS4) {
    expandNS(el);
  } else if(DOM) {
    expandDOM(el);
  }
}

function expandIE(el) {
  whichEl = eval(el + "Child");
  whichIm = eval(el+"Img");
  if (whichEl.style.display == "none") {
    whichEl.style.display = "block";
    whichIm.src = "./java/tree/images/minus.gif";
  }
  else {
    whichEl.style.display = "none";
    whichIm.src = "./java/tree/images/plus.gif";
  }
    window.event.cancelBubble = true ;
}

function expandNS(el) {
  whichEl = eval("document." + el + "Child");
  whichIm = eval("document." + el + "Parent.document.images['imEx']");
  if (whichEl.visibility == "hide") {
    whichEl.visibility = "show";
    whichIm.src = "./java/tree/images/minus.gif";
  }
  else {
    whichEl.visibility = "hide";
    whichIm.src = "./java/tree/images/plus.gif";
  }
  arrange();
}

function expandDOM(el) {

  whichEl = document.getElementById(el + "Child");
    whichIm = document.getElementById(el + "Img");

  if (whichEl.style.visibility != "visible") {
    whichEl.style.visibility = "visible";
    whichIm.src = "./java/tree/images/minus.gif";
  } else {
    whichEl.style.visibility = "hidden";
    whichIm.src = "./java/tree/images/plus.gif";
  }

}

function showAll() {
  for (i=firstInd; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    whichEl.visibility = "show";
  }
}

function expandAll(isBot) {
  newSrc = (isExpanded) ? "./java/tree/images/plus.gif" : "./java/tree/images/minus.gif";
  if (NS4) {
    for (i=firstInd; i<document.layers.length; i++) {
      whichEl = document.layers[i];
      if (whichEl.id.indexOf("Parent") != -1) {
        whichEl.document.images["imEx"].src = newSrc;
      }
      if (whichEl.id.indexOf("Child") != -1) {
        whichEl.visibility = (isExpanded) ? "hide" : "show";
      }
    }

    arrange();
   if (isBot && isExpanded) scrollTo(0,document.layers[firstInd].pageY);
  } else if(IE4) {
    divColl = document.all.tags("DIV");
    for (i=0; i<divColl.length; i++) {
      if (divColl(i).className == "child") {
        divColl(i).style.display = (isExpanded) ? "none" : "block";
      }
    }
    imColl = document.images.item("imEx");
    for (i=0; i<imColl.length; i++) {
      imColl(i).src = newSrc;
    }
  } else if(DOM) {
    divColl = document.getElementsByTagName("DIV");
    for (i=0; i<divColl.length; i++) {
      if (divColl(i).className == "child") {
        divColl(i).style.visibility = (isExpanded) ? "hidden" : "visible";
      }
    }
    imColl = document.getElementsByName("imEx");
    for (i=0; i<imColl.length; i++) {
      imColl(i).src = newSrc;
    }
  }

  isExpanded = !isExpanded;
}

onload = initIt;