if (jQuery) {  
	$(document).ready(function(){
		$('.likeButtonForm').submit(function(){
			var id = $(this).attr('id');
			$.ajax({
				url: '/modules/PDI_Like/like.php',
				data: 'like='+id,
				dataType: 'json',
				success: function(data){
					$('#'+id).html('<img src="/modules/PDI_Like/images/like.png" widht="" height="" alt="" />'+data.answer);
				}
			});
			return false;
		});
	});
} else {
    alert("jQuery isn't loaded.\njQuery is required!");
}