Count click on iframe PHP -

i have file title ad.php , contains

<a href="http://www.google.ro"><img src="bannerimg.png"></a> 

and in file have:

<iframe src="ad.php"></iframe> 

question how count click on iframe!

just if using javascript....

var clik = 0;  $('#myframe').click(function(){ clik++ alert(clik); }); 

update ajax

 $(document).ready(function(){   $('#myframe').click(function(e){   e.preventdefault();   $.ajax({  url : "countclick.php",  success: function(){     alert('done');    }  });   });  }); 

then in php file countclick.php retrieve current value database, , increment , update.

or execute increment query directly, without retrieving current value im assuming know how in php/mysql , im not gonna post part