free_style,
<html>
<body onmousemove="mouseShowHandler(event);">
<div id="fonid" class="fon"><img width="640" height="190" src="http://javascript.ru/forum/images/ca_serenity/misc/logo.gif" onclick="funkcia(event)"></div>
<input type="text" id="mouseX"> <input type="text" id="mouseY">
<script>
function mouseShowHandler(e){ // Определяем положение мышки
e = e || window.event;
if (e.pageX == null && e.clientX != null ) {
var html = document.documentElement;
var body = document.body;
e.pageX = e.clientX + (html && html.scrollLeft || body && body.scrollLeft || 0) - (html.clientLeft || 0);
e.pageY = e.clientY + (html && html.scrollTop || body && body.scrollTop || 0) - (html.clientTop || 0);
}
document.getElementById('mouseX').value = e.pageX;
document.getElementById('mouseY').value = e.pageY;
var top = e.pageX;
var left = e.pageY;
return { top: e.pageX, left: e.pageY };
}
function funkcia(event){
var peremen=mouseShowHandler(event);
alert("top: " + peremen.top + " left: " + peremen.left );
}
</script>
</body>
</html>