$(function() {

  $(".submit").click(function() {	

	$('.input1').css({border:"1px solid #B7B7B7", backgroundColor:"#ffffff"});
	$('.input2').css({border:"1px solid #B7B7B7", backgroundColor:"#ffffff"});
	$('.input3').css({border:"1px solid #B7B7B7", backgroundColor:"#ffffff"});
	$('.input4').css({border:"1px solid #B7B7B7", backgroundColor:"#ffffff"});
	$('.input5').css({border:"1px solid #B7B7B7", backgroundColor:"#ffffff"});
 
    $("#error1").empty(); 
   	$("#error2").empty(); 
    $("#error3").empty(); 
	$("#error4").empty();
	$("#error5").empty();
	
  	  var errors = 0;
	  var nazwa = $("input#nazwa").val();
		if (nazwa == "") {
		$("#error1").text("Proszę podać imię i nazwisko");
		$('input.input1').css({border:"1px solid red"});
		errors++;
    	}
	
		var firma = $("input#firma").val();
		if (firma == "") {
		$("#error2").text("Proszę podać nazwę firmy");
		$('input.input2').css({border:"1px solid red"});
		errors++;
    	}	

		var email = $("input#email").val();
		if (email == "") { 
		$("#error3").text("Proszę podać adres email"); 
		$('input.input3').css({border:"1px solid red"});
		errors++;
		}
		else if (!isEmail(email)) { 
		$("#error3").text("Niepoprawny adres email"); 
		$('input.input3').css({border:"1px solid red"});
		errors++;
		}

		var telefon = $("input#telefon").val();
		if (telefon == "") {
		$("#error4").text("Proszę podać nr telefonu"); 
		$('input.input4').css({border:"1px solid red"});	
		errors++;	
    	}

		var tresc = $("textarea#tresc").val();
		if (tresc == "") {
		$("#error5").text("Proszę wpisać wiadomość"); 
		$('textarea.input5').css({border:"1px solid red"});	
		errors++;	
    	}
	
		if (errors > 0) {
      		return false;
   		}
			
		  	$.ajax({
	  		type: "POST",
	  		url: "contact.php",
	  		data: dataString,
	  		success: function(){
	  		window.location.href = 'dziekujemy.php';
	  		}
	  	});
    return false;
	});

function isEmail(str)
{
	var regex = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;
	return regex.test(str);
}	
});