function kontrola(eml){
	if (eml.email.value==""){
		alert("You must fill in email address");
		eml.email.focus();
		return false;}
	else if (window.RegExp){
		re = new RegExp("^[^@]+@[^.]+\..+$");
		if (!re.test(eml.email.value)){
			alert("This Is not an e-mail address (someone@xxxx.yy)");
			eml.email.focus();
			return false;}}
	else {return true;}}