Ajax form göndermede sorun

<script type="text/javascript" src="stil/js/jquery_1.9.1.min.js"></script>
<script type="text/javascript" >
$(document).ready(kayitol())
function kayitol(){ 
var veriler = $('#oyformu').serialize();
$.ajax({
	type:"POST",
	url:"oykullan.php",
	data: veriler,
	error:function(){$('#oycevabi').html("Hata oluştu");},
	success:function(oycevabi){$('#oycevabi').html(oycevabi)}
})}; 
</script>

<div class='star-rating'>
 <form id='oyformu' name='oyformu' method='POST'>
      <div class='star-rating__wrap'>
	  
        <input class='star-rating__input' id='star-rating-5' onclick='kayitol()' type='radio'  onchange='this.form.submit()' name='oyver' value='5'/>
        <label class='star-rating__ico fa fa-star-o fa-lg' for='star-rating-5'  title='Süper'></label>
        
		<input class='star-rating__input' id='star-rating-4' onclick='kayitol()' type='radio'  onchange='this.form.submit()' name='oyver'  value='4'/>
        <label class='star-rating__ico fa fa-star-o fa-lg' for='star-rating-4' title='İyi'></label>
        
		<input class='star-rating__input' id='star-rating-3' onclick='kayitol()' onchange='kayitol' type='radio' name='oyver' value='3'/>
        <label class='star-rating__ico fa fa-star-o fa-lg' for='star-rating-3' title='İdare eder'></label>
		
        <input class='star-rating__input' id='star-rating-2' onclick='kayitol()' onchange='this.form.submit()' type='radio' name='oyver' value='2'/>
        <label class='star-rating__ico fa fa-star-o fa-lg' for='star-rating-2' title='Kötü '></label>
		
        <input class='star-rating__input' id='star-rating-1' onclick='kayitol()' type='radio' onchange='this.form.submit()' name='oyver' value='1'/>
        <label class='star-rating__ico fa fa-star-o fa-lg' for='star-rating-1' title='Berbat'></label>
		<input type='hidden' name='iceriksira' value='$makale_sira'/>
		

		</form>
		<div id='oycevabi'></div>
      </div>
    </div>