function html_size_width(){if (parseInt(navigator.appVersion)>3) {
 if (navigator.appName=="Netscape") {
  winW = window.innerWidth-16;
 }
 if (navigator.appName.indexOf("Microsoft")!=-1) {
  winW = document.body.offsetWidth-20;
 }
}return winW;}function html_size_height(){if (parseInt(navigator.appVersion)>3) {
 if (navigator.appName=="Netscape") {
  winH = window.innerHeight-16;
 }
 if (navigator.appName.indexOf("Microsoft")!=-1) {
  winH = document.documentElement.offsetHeight-20;
 }
}return winH;}	
/* Bibliothèque DHTML */

var DHTML = 0, DOM = 0, MS = 0, NS = 0, OP = 0;

function DHTML_init() {

 if (window.opera) {
     OP = 1;
 }
 if(document.getElementById) {
   DHTML = 1;
   DOM = 1;
 }
 if(document.all && !OP) {
   DHTML = 1;
   MS = 1;
 }
if(document.layers && !OP) {
   DHTML = 1;
   NS = 1;
 }
}

function getElem(p1,p2,p3) {
 var Elem;
 if(DOM) {
   if(p1.toLowerCase()=="id") {
     if (typeof document.getElementById(p2) == "object")
     Elem = document.getElementById(p2);
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="name") {
     if (typeof document.getElementsByName(p2) == "object")
     Elem = document.getElementsByName(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="tagname") {
     if (typeof document.getElementsByTagName(p2) == "object" ||
        (OP && typeof document.getElementsByTagName(p2) == "function"))
     Elem = document.getElementsByTagName(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
 else if(MS) {
   if(p1.toLowerCase()=="id") {
     if (typeof document.all[p2] == "object")
     Elem = document.all[p2];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="tagname") {
     if (typeof document.all.tags(p2) == "object")
     Elem = document.all.tags(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="name") {
     if (typeof document[p2] == "object")
     Elem = document[p2];
     else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
 else if(NS) {
   if(p1.toLowerCase()=="id" || p1.toLowerCase()=="name") {
   if (typeof document[p2] == "object")
     Elem = document[p2];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="index") {
    if (typeof document.layers[p2] == "object")
     Elem = document.layers[p2];
    else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
}

function getCont(p1,p2,p3) {
   var Cont;
   if(DOM && getElem(p1,p2,p3) && getElem(p1,p2,p3).firstChild) {
     if(getElem(p1,p2,p3).firstChild.nodeType == 3)
       Cont = getElem(p1,p2,p3).firstChild.nodeValue;
     else
       Cont = "";
     return(Cont);
   }
   else if(MS && getElem(p1,p2,p3)) {
     Cont = getElem(p1,p2,p3).innerText;
     return(Cont);
   }
   else return void(0);
}

function getAttr(p1,p2,p3,p4) {
   var Attr;
   if((DOM || MS) && getElem(p1,p2,p3)) {
     Attr = getElem(p1,p2,p3).getAttribute(p4);
     return(Attr);
   }
   else if (NS && getElem(p1,p2)) {
       if (typeof getElem(p1,p2)[p3] == "object")
        Attr=getElem(p1,p2)[p3][p4]
       else
        Attr=getElem(p1,p2)[p4]
         return Attr;
       }
   else return void(0);
}

function setCont(p1,p2,p3,p4) {
   if(DOM && getElem(p1,p2,p3) && getElem(p1,p2,p3).firstChild)
     getElem(p1,p2,p3).firstChild.nodeValue = p4;
   else if(MS && getElem(p1,p2,p3))
     getElem(p1,p2,p3).innerText = p4;
   else if(NS && getElem(p1,p2,p3)) {
     getElem(p1,p2,p3).document.open();
     getElem(p1,p2,p3).document.write(p4);
     getElem(p1,p2,p3).document.close();
   }
}

DHTML_init();
	/***********************************************
* Ultimate Fade-In Slideshow (v1.51): ©    Dynamic Drive (http://www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for this script and 100s more.
***********************************************/
 
var fadeimages=new Array()
//SET IMAGE PATHS. Extend or contract array as needed
fadeimages[0]= ["http://www.bfioptilas.de/objects/76_11_661282363/destocking1.gif", "http://www.bfioptilas.de/objects/76_11_661282363/DE_imaging_destocking_2010.html", "_blank"]
fadeimages[1]= ["http://www.bfioptilas.de/objects/76_11_661282363/destocking2.gif", "http://www.bfioptilas.de/objects/76_11_661282363/DE_imaging_destocking_2010.html", "_blank"] 
fadeimages[2]= ["http://www.bfioptilas.de/objects/76_11_661282363/destocking3.gif", "http://www.bfioptilas.de/objects/76_11_661282363/DE_imaging_destocking_2010.html", "_blank"]  
 
var fadebgcolor="white"

////NO need to edit beyond here/////////////
 
var fadearray=new Array() //array to cache fadeshow instances
var fadeclear=new Array() //array to cache corresponding clearinterval pointers
 
var dom=(document.getElementById) //modern dom browsers
var iebrowser=document.all
 
function fadeshow(theimages, fadewidth, fadeheight, borderwidth, delay, pause, displayorder){
this.pausecheck=pause
this.mouseovercheck=0
this.delay=delay
this.degree=10 //initial opacity degree (10%)
this.curimageindex=0
this.nextimageindex=1
fadearray[fadearray.length]=this
this.slideshowid=fadearray.length-1
this.canvasbase="canvas"+this.slideshowid
this.curcanvas=this.canvasbase+"_0"
if (typeof displayorder!="undefined")
theimages.sort(function() {return 0.5 - Math.random();}) //thanks to Mike (aka Mwinter) :)
this.theimages=theimages
this.imageborder=parseInt(borderwidth)
this.postimages=new Array() //preload images
for (p=0;p<theimages.length;p++){
this.postimages[p]=new Image()
this.postimages[p].src=theimages[p][0]
}
 
var fadewidth=fadewidth+this.imageborder*2
var fadeheight=fadeheight+this.imageborder*2
 
if (iebrowser&&dom||dom) //if IE5+ or modern browsers (ie: Firefox)
document.write('<div id="master'+this.slideshowid+'" style="position:relative;width:'+fadewidth+'px;height:'+fadeheight+'px;overflow:hidden;"><div id="'+this.canvasbase+'_0" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div><div id="'+this.canvasbase+'_1" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div></div>')
else
document.write('<div><img name="defaultslide'+this.slideshowid+'" src="'+this.postimages[0].src+'"></div>')
 
if (iebrowser&&dom||dom) //if IE5+ or modern browsers such as Firefox
this.startit()
else{
this.curimageindex++
setInterval("fadearray["+this.slideshowid+"].rotateimage()", this.delay)
}
}

function fadepic(obj){
if (obj.degree<100){
obj.degree+=10
if (obj.tempobj.filters&&obj.tempobj.filters[0]){
if (typeof obj.tempobj.filters[0].opacity=="number") //if IE6+
obj.tempobj.filters[0].opacity=obj.degree
else //else if IE5.5-
obj.tempobj.style.filter="alpha(opacity="+obj.degree+")"
}
else if (obj.tempobj.style.MozOpacity)
obj.tempobj.style.MozOpacity=obj.degree/101
else if (obj.tempobj.style.KhtmlOpacity)
obj.tempobj.style.KhtmlOpacity=obj.degree/100
else if (obj.tempobj.style.opacity&&!obj.tempobj.filters)
obj.tempobj.style.opacity=obj.degree/101
}
else{
clearInterval(fadeclear[obj.slideshowid])
obj.nextcanvas=(obj.curcanvas==obj.canvasbase+"_0")? obj.canvasbase+"_0" : obj.canvasbase+"_1"
obj.tempobj=iebrowser? iebrowser[obj.nextcanvas] : document.getElementById(obj.nextcanvas)
obj.populateslide(obj.tempobj, obj.nextimageindex)
obj.nextimageindex=(obj.nextimageindex<obj.postimages.length-1)? obj.nextimageindex+1 : 0
setTimeout("fadearray["+obj.slideshowid+"].rotateimage()", obj.delay)
}
}
 
fadeshow.prototype.populateslide=function(picobj, picindex){
var slideHTML=""
if (this.theimages[picindex][1]!="") //if associated link exists for image
slideHTML='<a href="'+this.theimages[picindex][1]+'" target="'+this.theimages[picindex][2]+'">'
slideHTML+='<img src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px">'
if (this.theimages[picindex][1]!="") //if associated link exists for image
slideHTML+='</a>'
picobj.innerHTML=slideHTML
}
 
 
fadeshow.prototype.rotateimage=function(){
if (this.pausecheck==1) //if pause onMouseover enabled, cache object
var cacheobj=this
if (this.mouseovercheck==1)
setTimeout(function(){cacheobj.rotateimage()}, 100)
else if (iebrowser&&dom||dom){
this.resetit()
var crossobj=this.tempobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
crossobj.style.zIndex++
fadeclear[this.slideshowid]=setInterval("fadepic(fadearray["+this.slideshowid+"])",50)
this.curcanvas=(this.curcanvas==this.canvasbase+"_0")? this.canvasbase+"_1" : this.canvasbase+"_0"
}
else{
var ns4imgobj=document.images['defaultslide'+this.slideshowid]
ns4imgobj.src=this.postimages[this.curimageindex].src
}
this.curimageindex=(this.curimageindex<this.postimages.length-1)? this.curimageindex+1 : 0
}
 
fadeshow.prototype.resetit=function(){
this.degree=10
var crossobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
if (crossobj.filters&&crossobj.filters[0]){
if (typeof crossobj.filters[0].opacity=="number") //if IE6+
crossobj.filters(0).opacity=this.degree
else //else if IE5.5-
crossobj.style.filter="alpha(opacity="+this.degree+")"
}
else if (crossobj.style.MozOpacity)
crossobj.style.MozOpacity=this.degree/101
else if (crossobj.style.KhtmlOpacity)
crossobj.style.KhtmlOpacity=this.degree/100
else if (crossobj.style.opacity&&!crossobj.filters)
crossobj.style.opacity=this.degree/101
}
 
 
fadeshow.prototype.startit=function(){
var crossobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
this.populateslide(crossobj, this.curimageindex)
if (this.pausecheck==1){ //IF SLIDESHOW SHOULD PAUSE ONMOUSEOVER
var cacheobj=this
var crossobjcontainer=iebrowser? iebrowser["master"+this.slideshowid] : document.getElementById("master"+this.slideshowid)
crossobjcontainer.onmouseover=function(){cacheobj.mouseovercheck=1}
crossobjcontainer.onmouseout=function(){cacheobj.mouseovercheck=0}
}
this.rotateimage()
}
var selected_chess = -1;selected_chess = 6;
function chess_menu(){
  var div = document.getElementById("tp_chessboard_menu");
  div.replaceChild(chess_construct(), div.firstChild);
}

function chess_construct(){
  var table = document.createElement("table");
  table.style.borderWidth = "0px";
    table.style.margin = "0";
    table.style.margin = "0";
    table.cellPadding= "0";
    table.cellSpacing= "0";
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var pair = 0;
  var nb_nodes = document.getElementById("tp_chessboard_menu_ul").childNodes.length;
  for (var i=0;i<nb_nodes; i++){
    if (i<8){
      if (i==4) 
         pair = 1;
      var n = document.getElementById("tp_chessboard_menu_ul").childNodes[i];
      var link = document.createElement("a");

      link.href = n.firstChild.href;
      link.target = n.firstChild.target;
      link.innerHTML = n.firstChild.innerHTML;
      link.style.fontSize = "11px";
        if (selected_chess==i) link.style.color= "#962f34";

      var td = document.createElement("td");
      td.style.height = "57px";
      td.style.overflow = "hidden";
      td.style.textAlign = "center";
      if (pair == 0){
        td.style.background = "#c0c0c0";
        pair = 1;
      }
      else{
        td.style.background = "#CFCFCF";
        pair = 0;
      }

      var div = document.createElement("div");
      div.style.width = "100px";
      div.style.overflow = "hidden";
      div.appendChild(link);
      td.appendChild(div);
      if (i==4){
         tbody.appendChild(tr);
         var tr = document.createElement("tr");
      }
      tr.appendChild(td);
    }
  }
  tbody.appendChild(tr);
  table.appendChild(tbody);
  return table;
}

function horizontal_graph(){
  var div = document.getElementById("horizontal_graph_block");
  var table = document.createElement("table");
  table.margin = "0";
  table.padding = "0";
table.width = "100%";
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
tr.align = "center";
    var td = document.createElement("td");
    td.appendChild(horizontal_graph_l0());
    tr.appendChild(td);
  tbody.appendChild(tr);
  table.appendChild(tbody);
  div.replaceChild(table, div.firstChild);
}

function horizontal_graph_l0(){
  var table = document.createElement("table");
  table.margin = "0";
  table.padding = "0";
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var nb_nodes = document.getElementById("horizontal_graph_menu").childNodes.length;
  for (var i=0;i<nb_nodes; i++){
    var n = document.getElementById("horizontal_graph_menu").childNodes[i];
    var link = document.createElement("a");

    link.href = n.firstChild.href;
    link.target = n.firstChild.target;
    link.innerHTML = n.firstChild.innerHTML+"&nbsp;&nbsp;&nbsp;&nbsp;";
    link.style.background = "#f5f5f5";
    link.style.borderLeftColor = "#cccccc";
    link.style.borderLeftWidth = "1px";
    link.style.borderLeftStyle = "solid";
    link.style.borderRightColor = "#cccccc";
    link.style.borderRightWidth = "1px";
    link.style.borderRightStyle = "solid";
    var img = document.createElement("img");
    img.src = "./images/templates/arrowdn.gif";
      img.style.display = "none";
    img.style.position = "absolute";
    img.style.right = "5px";
    img.style.top = "5px";
    var div = document.createElement("div");
    div.style.position = "relative";
    div.appendChild(link);
    var td = document.createElement("td");
    td.appendChild(horizontal_graph_blocktop());
 
    td.appendChild(horizontal_graph_l1(n));
    if (td.lastChild.getElementsByTagName("td")[0]){
      img.style.display = "block";}
    div.appendChild(img);
    td.insertBefore(div, td.lastChild);
    td.appendChild(horizontal_graph_blockbottom());
    addEvent(td, "mouseover",display, false);
    addEvent(td, "mouseout",hidde, false);
    tr.appendChild(td);
  }
  tbody.appendChild(tr);
  table.appendChild(tbody);
  return table;
}

function display(){
  this.getElementsByTagName("table")[0].style.display = "block";
  this.getElementsByTagName("img")[0].src = "./images/templates/arrowdn_over.gif";
  this.getElementsByTagName("a")[0].style.backgroundColor= "#cccccc";
  for (i=1;i<7;i++) this.getElementsByTagName("b")[i].style.backgroundColor= "#cccccc";
}

function hidde(){
  this.getElementsByTagName("table")[0].style.display = "none";
  this.getElementsByTagName("img")[0].src = "./images/templates/arrowdn.gif";
  this.getElementsByTagName("a")[0].style.backgroundColor= "#f5f5f5";
  for (i=1;i<7;i++) this.getElementsByTagName("b")[i].style.backgroundColor= "#f5f5f5";
}

function display_1(){
  this.getElementsByTagName("table")[0].style.display = "block";
  this.getElementsByTagName("table")[0].zIndex = "31";
  this.getElementsByTagName("img")[0].src = "./images/templates/arrowdn_over.gif";
  this.style.backgroundColor= "#cccccc";
}

function hidde_1(){
  this.style.zIndex = "1";
  this.getElementsByTagName("table")[0].style.display = "none";
  this.getElementsByTagName("img")[0].src = "./images/templates/arrowdn.gif";
  this.style.backgroundColor= "#f5f5f5";
}

function display_2(){
  this.style.backgroundColor= "#cccccc";
}

function hidde_2(){
  this.style.backgroundColor= "#f5f5f5";
}

function horizontal_graph_blocktop(){
  var b1 = document.createElement("b");
  b1.className = "horizontal_graph_block_b1";
  var b2 = document.createElement("b");
  b2.className = "horizontal_graph_block_b2";
  var b3 = document.createElement("b");
  b3.className = "horizontal_graph_block_b3";
  var b4 = document.createElement("b");
  b4.className = "horizontal_graph_block_b4";

  var d = document.createElement("div");
  d.appendChild(b1);
  d.appendChild(b2);
  d.appendChild(b3);
  d.appendChild(b4);
  return d;
}

function horizontal_graph_blockbottom(){
  var c1 = document.createElement("b");
  c1.className = "horizontal_graph_block_c1";
  var c2 = document.createElement("b");
  c2.className = "horizontal_graph_block_c2";
  var c3 = document.createElement("b");
  c3.className = "horizontal_graph_block_c3";
  var c4 = document.createElement("b");
  c4.className = "horizontal_graph_block_c4";

  var d = document.createElement("div");
  d.appendChild(c4);
  d.appendChild(c3);
  d.appendChild(c2);
  d.appendChild(c1);
  return d;
}

function horizontal_graph_l1(n){
  var t = document.createElement("table");
  t.style.position = "absolute";
  t.style.margin = "0";
  t.style.padding = "0";
  t.style.display = "none";
  t.style.marginTop = "4px";
  t.cellPadding = "0";
  t.cellSpacing = "0";
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  td.appendChild(horizontal_graph_blocktop2());
  tr.appendChild(td);
  tbody.appendChild(tr);
  t.appendChild(tbody);
  
  var table= document.createElement("table");
  table.style.background = "#f5f5f5";
  table.style.borderLeftColor = "#cccccc";
  table.style.borderLeftWidth = "1px";
  table.style.borderLeftStyle = "solid";
  table.style.borderRightColor = "#cccccc";
  table.style.borderRightWidth = "1px";
  table.style.borderRightStyle = "solid";
  table.cellPadding = "0";
  table.cellSpacing = "0";
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  var nb_nodes = n.getElementsByTagName("ul")[0].childNodes.length;
  for (var j=0;j<nb_nodes; j++){
    var n1 = n.getElementsByTagName("ul")[0].childNodes[j];
    var link = document.createElement("a");
    link.href = n1.firstChild.href;
    link.target = n1.firstChild.target;
    link.innerHTML = n1.firstChild.innerHTML+"&nbsp;&nbsp;&nbsp;&nbsp;";
    var img = document.createElement("img");
    img.src = "./images/templates/arrowdn.gif";
    img.style.display = "none";
    var div= document.createElement("div");
    div.style.position = "relative";
    div.appendChild(horizontal_graph_l2(n1));
    if (div.lastChild.getElementsByTagName("td")[0]){
      img.style.display = "block";}

var table1= document.createElement("table");
var tbody1 = document.createElement("tbody");
var tr1 = document.createElement("tr");
var td1 = document.createElement("td");
td1.appendChild(link);
tr1.appendChild(td1);
var td1 = document.createElement("td");
td1.appendChild(img);
td1.width = "10px";
tr1.appendChild(td1);
var td1 = document.createElement("td");
td1.appendChild(div);
td1.width = "5px";
tr1.appendChild(td1);
tbody1.appendChild(tr1);
table1.appendChild(tbody1);
    addEvent(table1, "mouseover",display_1, false);
    addEvent(table1, "mouseout",hidde_1, false);
    table1.style.width = "100%";

    td.appendChild(table1);
  }
  tr.appendChild(td);
  tbody.appendChild(tr);
  table.appendChild(tbody);
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  td.appendChild(table);
  tr.appendChild(td);
  tbody.appendChild(tr);
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  td.appendChild(horizontal_graph_blockbottom2());
  tr.appendChild(td);
  tbody.appendChild(tr);
  t.appendChild(tbody);
  
  if (nb_nodes > 0)
    return t;
  else
    return document.createElement("table");
}

function horizontal_graph_blocktop2(){
  var b1 = document.createElement("i");
  b1.className = "horizontal_graph_block_b21";
  var b2 = document.createElement("i");
  b2.className = "horizontal_graph_block_b22";
  var b3 = document.createElement("i");
  b3.className = "horizontal_graph_block_b23";
  var b4 = document.createElement("i");
  b4.className = "horizontal_graph_block_b24";

  var d = document.createElement("div");
  d.appendChild(b1);
  d.appendChild(b2);
  d.appendChild(b3);
  d.appendChild(b4);
  return d;
}

function horizontal_graph_blockbottom2(){
  var c1 = document.createElement("i");
  c1.className = "horizontal_graph_block_c21";
  var c2 = document.createElement("i");
  c2.className = "horizontal_graph_block_c22";
  var c3 = document.createElement("i");
  c3.className = "horizontal_graph_block_c23";
  var c4 = document.createElement("i");
  c4.className = "horizontal_graph_block_c24";

  var d = document.createElement("div");
  d.appendChild(c4);
  d.appendChild(c3);
  d.appendChild(c2);
  d.appendChild(c1);
  return d;
}

function horizontal_graph_l2(n){
  var t = document.createElement("table");
  t.style.position = "absolute";
  t.style.zIndex = "31";
  t.style.margin = "0";
  t.style.padding = "0";
  t.style.display = "none";
  t.cellPadding = "0";
  t.cellSpacing = "0";
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  td.appendChild(horizontal_graph_blocktop2());
  tr.appendChild(td);
  tbody.appendChild(tr);
  t.appendChild(tbody);
  
  var table= document.createElement("table");
  table.style.background = "#f5f5f5";
  table.style.zIndex = "31";
  table.style.borderLeftColor = "#cccccc";
  table.style.borderLeftWidth = "1px";
  table.style.borderLeftStyle = "solid";
  table.style.borderRightColor = "#cccccc";
  table.style.borderRightWidth = "1px";
  table.style.borderRightStyle = "solid";
  table.cellPadding = "0";
  table.cellSpacing = "0";
  var tbody = document.createElement("tbody");
  var nb_nodes = n.getElementsByTagName("ul")[0].childNodes.length;
  for (var j=0;j<nb_nodes; j++){
    var n1 = n.getElementsByTagName("ul")[0].childNodes[j];
    var link = document.createElement("a");
    link.href = n1.firstChild.href;
    link.target = n1.firstChild.target;
    link.innerHTML = n1.firstChild.innerHTML;
    var td = document.createElement("td");
    td.appendChild(link);
    addEvent(td, "mouseover",display_2, false);
    addEvent(td, "mouseout",hidde_2, false);
    var tr = document.createElement("tr");
    tr.appendChild(td);
    tbody.appendChild(tr);
  }
  table.appendChild(tbody);
  var tbody = document.createElement("tbody");
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  var div = document.createElement("div");
  div.appendChild(table);
  td.appendChild(div);
  tr.appendChild(td);
  tbody.appendChild(tr);
  var tr = document.createElement("tr");
  var td = document.createElement("td");
  td.appendChild(horizontal_graph_blockbottom2());
  tr.appendChild(td);
  tbody.appendChild(tr);
  t.appendChild(tbody);
  
  
  if (nb_nodes > 0)
    return t;
  else
    return document.createElement("table");
}

function addEvent(obj, type, fn){
  if (obj.addEventListener)  obj.addEventListener (type, fn, false);
  else if (obj.attachEvent){
    obj["e"+type+fn] = fn;
    obj[type+fn] = function(){ obj["e"+type+fn] (window.event);};
    obj.attachEvent("on"+type, obj[type+fn]);
  }
}