Untitled

<html>
<head>
</head>
<body>
<p>
<img src="Ikona1.png" alt="" id='ikona' />
</p>
<script type="text/javascript">
var ikona_n = new Image();
ikona_n.src = 'Ikona2.png';

var ikona_p = new Image();
ikona_p.src = 'Ikona1.png';

var obraz= document.getElementById('ikona');
obraz.onMouseOver function() {
this.src = ikona_n.src;
}
obraz.OnMouseOut= function(){
this.src = ikona_p.src;
}
</script>
</body>
</html>