function check(cform) {
	if (cform.name.value=="") {
		alert("Write your name, please.");
		cform.name.focus();
		return false;
	}
	else if (cform.text.value=="") {
		alert("You have to write something.");
		cform.text.focus();
		return false;
	}
	else if (cform.code.value=="") {
    	alert("Please, fill in a security code.");
	    cform.code.focus();
	    return false;
	}

	else {
		return true;
	}
}