Jquery Post

<div id="iletform" style="text-align: center;">

<table cellspacing="0" align="center" width="450">
    <form id="iletisim" name="iletisim">
<tr><td width="300" align="left"><b>Adınız ve Soyadınız</b></td><td><input name="ad" id="iad" style="width: 150px;"/></td></tr>    
<tr><td align="left"><b>E-Posta Adresiniz</b></td><td><input name="eposta" id="ieposta" style="width: 150px;"/></td></tr>    
<tr><td align="left"><b>Cep Telefonunuz</b></td><td><input name="cep" id="icep" style="width: 150px;"/></td></tr>    
<tr><td align="left"><b>Kategori</b></td><td>
<select name="kategori" id="ikategori" style="width: 150px;">
<option value="Sorun">Sorun</option>
<option value="Oneri">Öneri</option>
<option value="Tesekkur">Teşekkür</option>
<option value="Bilgi">Bilgi</option>
</select>
</td></tr>    
<tr><td align="left"><b>Konu</b></td><td><input name="konu" id="ikonu" style="width: 150px;"/></td></tr>    
<tr><td colspan="2" align="left"><br /><b>Mesajınız</b><br />
<textarea name="mesaj" id="imesaj" style="width: 450px; height:150px"></textarea></td></tr>    
<tr><td colspan="2">
<input type="button" id="isubmit" onclick="igonder();" value="Gönder"/></td></tr>    
</form>
</table>    
</div>

 igonder=function(){
    alert($("#iad").val());
    $('#iletform').html("Lütfen Bekleyin");
    $.post("/jqislem.php", {"islem":"iletisim","ad":$("#iad").val(),"eposta":$("#ieposta").val(),"cep":$("#icep").val(),"kategori":$("#ikategori").val(),"konu":$("#ikonu").val(),"mesaj":$("#imesaj").val()}, function(data){
        $('#iletform').html(data);
    });
}

echo "<pre>";
print_r($_POST);
echo "</pre>";