date_default_timezone_set('UTC');
$time = date("H");
function changebg() {
if ($time = 1) {
echo "images/bg1.jpg";}
elseif ($time = 2) {echo "images/bg2.jpg";}
elseif ($time = 3) {echo "images/bg2.jpg";}
elseif ($time = 4) {echo "images/bg2.jpg";}
elseif ($time = 5) {echo "images/bg2.jpg";}
elseif ($time = 6) {echo "images/bg2.jpg";}
elseif ($time = 7) {echo "images/bg2.jpg";}
elseif ($time = 8) {echo "images/bg2.jpg";}
elseif ($time = 9) {echo "images/bg2.jpg";}
elseif ($time = 10) {echo "images/bg2.jpg";}
elseif ($time = 11) {echo "images/bg2.jpg";}
elseif ($time = 12) {echo "images/bg2.jpg";}
elseif ($time = 13) {echo "images/bg2.jpg";}
elseif ($time = 14) {echo "images/bg2.jpg";}
elseif ($time = 15) {echo "images/bg2.jpg";}
elseif ($time = 16) {echo "images/bg2.jpg";}
elseif ($time = 17) {echo "images/bg2.jpg";}
elseif ($time = 18) {echo "images/bg2.jpg";}
elseif ($time = 19) {echo "images/bg2.jpg";}
elseif ($time = 20) {echo "images/bg2.jpg";}
elseif ($time = 21) {echo "images/bg2.jpg";}
elseif ($time = 22) {echo "images/bg2.jpg";}
elseif ($time = 23) {echo "images/bg2.jpg";}
elseif ($time = 24) {echo "images/bg2.jpg";}

else {echo "mainbg.jpg";}
}
?>