why value change in jquery ajax
<p>in this blow code, after printing $tarikh_sal i can see <code>2012-10-27</code> correctly, but in <code>$.post</code> that changed to <code>1975</code>, i do not change that. why?</p>

<p><strong>php code</strong></p>

<pre><code>echo $tarikh_sal; //-&gt;2012-10-27
if ( $khoms &gt; 0) 
{?&gt;
    &lt;script&gt;
        $.post("actions.php",{ kh:&lt;?php echo $kh;?&gt; , tarikh_sal:&lt;?php echo $tarikh_sal;?&gt; , postaction:'sabte_kh'},
        function(data){
            alert(data.message);
        },'json');
    &lt;/script&gt;
&lt;?}
</code></pre>

<p><strong>FIREBUG:</strong></p>

<pre><code>kh=2397897533&amp;tarikh_sal=1975&amp;postaction=sabte_kh
</code></pre>
