function checkForm() {
	var count = 0;
	var name = document.getElementById('nazwisko');
	name.style.border = "1px solid #399";
	name.style.background = "#FFF";
	if(name.value == "") {
		name.style.border = "1px solid red";
		name.style.background = "#FCC";
		count++;
	}
	
	name = document.getElementById('adres');
	name.style.border = "1px solid #399";
	name.style.background = "#FFF";
	if(name.value == "" || name.value.indexOf('@') == -1) {
		name.style.border = "1px solid red";
		name.style.background = "#FCC";
		count++;
	}
	
	name = document.getElementById('pytanie');
	name.style.border = "1px solid #399";
	name.style.background = "#FFF";
	if(name.value == "") {
		name.style.border = "1px solid red";
		name.style.background = "#FCC";
		count++;
	}
	
	if(count != 0) {
		document.getElementById('form_error').style.display = "block";
		return false;
	}
}