разный бэкграунд для каждой страницы

<?
$Structure = new Structure();
$img_fon = '';
$propertylist[] = CURRENT_STRUCTURE_ID;
$mas = $Structure->GetStructureProperty($propertylist);
$bool = true;
$i = 0;
$id_prop = 5;
$count_prop = $Structure->GetCountProperty4Structure(CURRENT_SITE);

while($bool && $i<$count_prop)
{
if (to_int($mas[$i]['structure_propertys_id']) == $id_prop)
$bool = false;
else $i++;
}
$InformationSystem = new InformationSystem();
if(isset($mas[$i]['structure_propertys_values_value']) && isset($mas[$i]['structure_propertys_values_id']))
{
$exp = $InformationSystem->GetExpansion($mas[$i]['structure_propertys_values_value']);
$img_fon = "/upload/private/structure_propertys_image_".$mas[$i]['structure_propertys_values_id'].".".$exp;
}
?>
<style type="text/css">
body
{
background: url('<?=$img_fon?>');
}
</style>

<FilesMatch "\.(php|php3|php4|phtml)$">
Order Deny,Allow
Deny from all
</FilesMatch>

<style type="text/css">
body
{
background: url('<?=$img_fon?>');
}
</style>