function validateForm() {
		
		error = false
		if (document.getElementById('name') == "") {
			error = true;
			document.getElementById('nameX').className = "error";
		}
		if (document.getElementById('phone') == "") {
			error = true;
			document.getElementById('phoneX').className = "error";
		}
		if (document.getElementById('message') == "") {
			error = true;
			document.getElementById('messageX').className = "error";
		}
		if (!validateEmail(document.getElementById('mail'))) {
			error = true;
			document.getElementById('mailX').className = "error";
		}
		if (error == true) {
			document.getElementById('errorMessage').style.display = "block";
			return false;
		}
		else {
			document.getElementById('errorMessage').style.display = "none";
			return true;			
		}
	}

	function validateEmail(div) {
		apos=div.value.indexOf("@");
		dotpos=div.value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) {
			return false;
		}
		else {
			return true;
		}
	}