$(document).ready(function(){
	$("#writeForm").submit(function(){
		$.ajax({
		   type: "POST",
		   url: "http://www.spoltex.opava.cz/ajax/random.php",
		   async: false,
		   success: function(msg){
			$("#sec").html("<input type='hidden' name='sec' value='"+msg+"' />");
			
		   }
		});
		if($("#sec").html()!= "")return true;
		else{return false;}
	});	
});