document.body.onscroll

<style>
.tdbgclrmuismenuxjs
{
 background-color:#000000;
}
</style>
<script language="JavaScript">
var menuitems = new Array('<a href="index.php">Home</a>','<a href="plaats.php">Een bericht plaatsen</a>','<a href="http://www.google.be">Google</a>','<a href="javascript:history.back();">Vorige</a>');		// De items in het menu, gescheiden door een komma en tussen enkele haakjes!
var ownname = "Uw eigen titel graag";     // Vul hier de naam van het menu in
var breedte = 150;                       // De breedte van het menu
var menutitlestyle = "1";                // 1 geeft de titel weer, 2 vraagt om een eigen titel


// Verander hieronder niets meer!

var dragging = 1;
var url = new String(window.location);
var parts = url.split('/');
var file = parts[ parts.length - 1].split('?')[0];
if (file == "index.php" || file == "" || file == "showallmssgs.php") {
 

 if (menutitlestyle == "2") {
  var menunaam = ownname;
 }
 else {
  var menunaam = "Een leuk menuutje";
 }

 document.oncontextmenu=function() {
 return false;
 }
 document.onmousedown=click;
 function click() {
  if (event.button=="2") {
   document.all('menu').style.left=event.x + document.body.scrollLeft - breedte/2;
   document.all('menu').style.top=event.y + document.body.scrollTop;
   document.all('menu').style.visibility="visible";
  }
 }
 function nodisp() {
  document.all('menu').style.visibility="hidden";
 }
 function sleep() {
  if (event.button=="1") {
   var xchoppx = document.all('menu').style.left.split('');
   var xpositionfromdiv = '';
   for (i=0; i<xchoppx.length - 2;i++) {
    xpositionfromdiv += xchoppx[i];
   }
   var ychoppx = document.all('menu').style.top.split('');
   var ypositionfromdiv = '';
   for (i=0; i<ychoppx.length - 2;i++) {
    ypositionfromdiv += ychoppx[i];
   }
   var xdif = event.x - xpositionfromdiv;
   var ydif = event.y - ypositionfromdiv;
   document.onmousemove=function() {
    if (dragging==1) {
     document.all('menu').style.left=event.x - xdif;
     document.all('menu').style.top=event.y - ydif;
    }
   }
  }
 }
 var lengte = menuitems.length;
 document.write('<div id="menu" style="position:absolute; visibility:hidden; z-index:1;"><table cellspacing="1" cellpadding="3" width="'+breedte+'">');
 document.write('<tr><td class="tdbgclrmuismenuxjs" onSelectstart="return false;" onMousedown="dragging=1;sleep();" onMouseup="dragging=0;sleep();" width="'+(breedte-20)+'" align="center" title="Slepen om te verplaatsen"><a><b><font color="#ffffff">'+menunaam+'</font></b></a></td><td align="center" width="20px" class="tdbgclrmuismenuxjs"><a href="javascript:nodisp();"><font color="#ffffff">X</font></a></td></tr>');
 for (i=0;i<lengte;i++) {
  document.write('<tr><td id="menunr'+i+'" colspan="2">'+menuitems[i]+'</td></tr>');
 }
 document.write('</table></div>');
}
</script>

<style>
.tdbgclrmuismenuxjs
{
 background-color:#000000;
}
</style>
<script language="JavaScript">
var menuitems = new Array('<a href="index.php">Home</a>','<a href="plaats.php">Een bericht plaatsen</a>','<a href="http://www.google.be">Google</a>','<a href="javascript:history.back();">Vorige</a>');		// De items in het menu, gescheiden door een komma en tussen enkele haakjes!
var ownname = "Uw eigen titel graag";     // Vul hier de naam van het menu in
var breedte = 150;                       // De breedte van het menu
var menutitlestyle = "1";                // 1 geeft de titel weer, 2 vraagt om een eigen titel
 
 
// Verander hieronder niets meer!
 
var dragging = 1;
var url = new String(window.location);
var parts = url.split('/');
var file = parts[ parts.length - 1].split('?')[0];
if (file == "index.php" || file == "" || file == "showallmssgs.php") {
 
 
 if (menutitlestyle == "2") {
  var menunaam = ownname;
 }
 else {
  var menunaam = "Een leuk menuutje";
 }
 
 document.oncontextmenu=function() {
 return false;
 }
 document.onmousedown=click;
 function click() {
  if (event.button=="2") {
   document.all('menu').style.left=event.x + document.body.scrollLeft - breedte/2;
   document.all('menu').style.top=event.y + document.body.scrollTop;
   document.all('menu').style.visibility="visible";
  }
 }
 function nodisp() {
  document.all('menu').style.visibility="hidden";
 }
 function sleep() {
  if (event.button=="1") {
   var xchoppx = document.all('menu').style.left.split('');
   var xpositionfromdiv = '';
   for (i=0; i<xchoppx.length - 2;i++) {
    xpositionfromdiv += xchoppx[i];
   }
   var ychoppx = document.all('menu').style.top.split('');
   var ypositionfromdiv = '';
   for (i=0; i<ychoppx.length - 2;i++) {
    ypositionfromdiv += ychoppx[i];
   }
   var xdif = event.x - xpositionfromdiv;
   var ydif = event.y - ypositionfromdiv;
   document.onmousemove=function() {
    if (dragging==1) {
     document.all('menu').style.left=event.x - xdif;
     document.all('menu').style.top=event.y - ydif;
    }
   }
  }
 }
 var lengte = menuitems.length;
 document.write('<div id="menu" style="position:absolute; visibility:hidden; z-index:1;"><table cellspacing="1" cellpadding="3" width="'+breedte+'">');
 document.write('<tr><td class="tdbgclrmuismenuxjs" onSelectstart="return false;" onMousedown="dragging=1;sleep();" onMouseup="dragging=0;sleep();" width="'+(breedte-20)+'" align="center" title="Slepen om te verplaatsen"><a><b><font color="#ffffff">'+menunaam+'</font></b></a></td><td align="center" width="20px" class="tdbgclrmuismenuxjs"><a href="javascript:nodisp();"><font color="#ffffff">X</font></a></td></tr>');
 for (i=0;i<lengte;i++) {
  document.write('<tr><td id="menunr'+i+'" colspan="2">'+menuitems[i]+'</td></tr>');
 }
 document.write('</table></div>');
}
</script>

var d = document;
if (d.attachEvent) d.attachEvent("onmousewheel", function(event) { onWheel(event, callBack); });
else if (d.addEventListener) d.addEventListener('DOMMouseScroll',  function(event) { onWheel(event, callBack); }, false);

var d = document;
if (d.attachEvent) d.attachEvent("onmousewheel", function(event) { onWheel(event, callBack); });
else if (d.addEventListener) d.addEventListener('DOMMouseScroll',  function(event) { onWheel(event, callBack); }, false);

var onWheel = function(event, callBack) { 
	event = globalizeEvent(event);

	callBack(event);
	return false;
 }

var globalizeEvent = function(event) { 
event.details = (window.opera)  ? (event.wheelDelta/440)
			        : ((event.detail) ? -(event.detail/12) : (event.wheelDelta/120));
return event;
 }

var onWheel = function(event, callBack) { 
	event = globalizeEvent(event);
 
	callBack(event);
	return false;
 }
 
var globalizeEvent = function(event) { 
event.details = (window.opera)  ? (event.wheelDelta/440)
			        : ((event.detail) ? -(event.detail/12) : (event.wheelDelta/120));
return event;
 }

function callBack(event) { alert(event.details); }

function callBack(event) { alert(event.details); }