<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js?ver=1.3.2' type='text/javascript'></script>
<script type='text/javascript'>
//<![CDATA[
$(function(){
// ***
// Scrolling background
// ***
// height of background image in pixels
var backgroundheight = 4000;

// get the current minute/hour of the day
var now = new Date();
var hour = now.getHours();
var minute = now.getMinutes();

// work out how far through the day we are as a percentage - e.g. 6pm = 75%
var hourpercent = hour / 24 * 100;
var minutepercent = minute / 30 / 24 * 100;
var percentofday = Math.round(hourpercent + minutepercent);

// calculate which pixel row to start graphic from based on how far through the day we are
var offset = backgroundheight / 100 * percentofday;

// graphic starts at approx 6am, so adjust offset by 1/4
var offset = offset - (backgroundheight / 1);

function scrollbackground() {
// decrease the offset by 1, or if its less than 1 increase it by the background height minus 1
offset = (offset < 1) ? offset + (backgroundheight - 1) : offset - 1;
// apply the background position
$('body').css("background-position", "50% " + offset + "px");
// call self to continue animation
setTimeout(function() {
scrollbackground();
}, 70
);
}
// Start the animation
scrollbackground();
});

//]]>
</script>
<style>
body {
background: black url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5DBOtfuzUpgmZd8Uoec7LDh39iFo5FwulDrv6d4FlOOSIlukWXAj8RmO51jAXZl7lr_VF4yrbnw2yUimpfUGWkol_MORgo3sh7JjdYg5UdAVbg5PJl4HRHSc3jxSxO0_XKxvSiQSkAw3Q/s800/animated%2520blue%2520stars.gif
) repeat center; background-attachment: fixed;
}
</style>