function isEmail(elm)
	{
	if (elm.value.indexOf("@") + "" != "-1" &&
		elm.value.indexOf(".") + "" != "-1" &&
		elm.value != "")
	return true;
	else return false;
	}

function isFilled(elm) {
	if (elm.value == "" ||
		elm.value == null)
	return false;
	else return true;
	}

function isReady(form) {
   	
    if (isFilled(form.realname) == false) {
    alert("Please insert your name.");	
    form.realname.focus();
    return false;
    }
    	    	
    if (isEmail(form.email) == false) {
		alert("Please insert a correct email address.");
		form.email.focus();
		return false;
		}

}