<html>
<head>
<style>
body{background-repeat:no-repeat}
</style>

</head>

<?$minute=date("i");
//echo $minute;
?>
<?if($minute<43)
{?>
<body background="Tulips.jpg">
<?}
else
{?>
<body background="Penguins.jpg">
<?}?>

<h1>Welcome to my website</h1>

</body>
</html>