function checkEmail(myMail) {
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myMail)){
return (true)
}

return (false)
}

function checkFormData(){
	
	var forma=document.getElementById("mailData");
	var poruka="";
	if (!checkEmail(forma.mail.value)) poruka+="You must enter valid e-mail!<br />";
	if (forma.name.value=="") poruka+="Please, enter your name.<br />";
	if (forma.subject.value=="") poruka+="Please enter Subject.<br />";
	if (forma.text.value=="") poruka+="Please enter your message.<br />";
	
	if (poruka=="") {
		
		return true;
	}
	else{
	
		document.getElementById("errorMessage").innerHTML=poruka;
		return false;
		
	}
}