<body onload="mm()">
<SCRIPT LANGUAGE="JavaScript">
function mm()
{
var n = Math.ceil(Math.random()*3);
document.body.style.backgroundImage = "url(pic/pic"+ n +")";
}
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
function mm()
{
var n = Math.ceil(Math.random()*3);
document.body.style.backgroundImage = "url(pic/pic"+ n +")";
}
</SCRIPT>
function mm()
{
var n = Math.ceil(Math.random()*3);
document.body.style.backgroundImage = "url(pic/pic"+ n +".jpg)";
}
</SCRIPT>