//http://www.codelifter.com/main/javascript/capturemouseposition1.html
// Detect if the browser is IE or not.
// If it is not IE, we assume that the browser is NS.
var IE = document.all?true:false
var DocumentName;

// If NS -- that is, !IE -- then set up for mouse capture
if (!IE) document.captureEvents(Event.MOUSEMOVE)

// Set-up to use getMouseXY function onMouseMove
function StartMouse(DocName)
{
    DocumentName = DocName;
    document.onmousemove = getMouseXY;
}

function EndMouse()
{
    document.onmousemove = false;
}

// Temporary variables to hold mouse x-y pos.s
var tempX = 0
var tempY = 0

// Main function to retrieve mouse x-y pos.s

function getMouseXY(e) {
  if (IE) { // grab the x-y pos.s if browser is IE
    tempX = event.clientX + document.body.scrollLeft
    tempY = event.clientY + document.body.scrollTop
  } else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX
    tempY = e.pageY
  }  
  // catch possible negative values in NS4
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}  
  // show the position values in the form named Show
  // in the text fields named MouseX and MouseY
  document.getElementById(DocumentName).style.left = tempX-30;
  document.getElementById(DocumentName).style.top = tempY;
  return true
}

[HTML] pobierz, plaintext 
<a href="#File" onmouseover="StartMouse('MenuDiv');" onmouseout="EndMouse();"><font size="30">Plik</font></a>
<div class="div" id="MenuDiv">
</div>
[HTML] pobierz, plaintext 

.div {position: absolute;}