Image rollover

Change the images below. Particularly useful for buttons.

if (document.images) {
button1 = new Image
button2 = new Image
button1.src = 'monday.gif'
button2.src = 'tuesday.gif'
}
//-->
</script>
<a href="javascript.htm" onmouseover="document.rollover.src=button2.src"
onmouseout="document.rollover.src=button1.src">
<img src="monday.gif" border="0" name="rollover"></a>