<ul class="pr-sites">
<?php
$result = mysql_query("SELECT id,lowimg,title FROM zagruska",$db);
if(!$result)
{
echo "error 1";
exit(mysql_error());
}

if(mysql_num_rows($result)>0)
{
$myrow=mysql_fetch_array($result);
do
{
printf("<li><a href='%s' title='%s'><img src='%s' alt='%s' /></a></li>
",$myrow["id"],$myrow["title"],$myrow["lowimg"],$myrow["title"]);
}

while($myrow=mysql_fetch_array($result));

}
else
{
echo "error2";
exit();
}
?>
</ul>

<li><a href='%s' title='%s'><img src='%s' alt='%s' /></a></li>