Incearca asta:

Cod:
<?php
if(isset($_POST['semn_zodiac']))
	{$semn_zodiac=$_POST['semn_zodiac']; }
	else {$semn_zodiac="Berbec";}
?>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-2">
</head>

<body>
<script type="text/javascript" language="JavaScript">
var sign='<?php echo $semn_zodiac;?>';
var url='http://www.eastrolog. ro/horoscop-zilnic/';
url+='horoscop-parteneri.php?id='+id;
url+='&top='+escape(top.location.host);
url+='&self='+escape(self.location.host);
url+='&sign='+escape(sign);
document.write('<sc'+'ript type="text/javascript" language="JavaScript"');
document.write(' src="'+url);
document.write('"></sc'+'ript>');
</script>
<form name="form1" method="post" action="pagina_ta.php">
<select name="semn_zodiac" size="1">
<option selected>Berbec</option>
<option>Taur</option>
<option>Gemeni</option>
<option>Rac</option>
<option>Leu</option>
<option>Fecioara</option>
<option>Balanta</option>
<option>Scorpion</option>
<option>Sagetator</option>
<option>Capricorn</option>
<option>Varsator</option>
<option>Pesti</option>
</select>
</form>
</body>
</html>
... trebuie sa schimbi action-ul la formular cu pagina ta, unde pui scriptu...