re = /^([\w-\.])+(\@)([\w-])+(\.)(\w)+/;

function verify(frm) {

    if ((frm.Name.value.length + frm.Message.value.length)==0) {
        alert('Fill required fields, please.');
        frm.Name.focus();
        return false;
    } else if (frm.Name.value.length==0) {
        alert('Enter your name, please.');
        frm.Name.focus();
        return false;
    } else if (frm.Message.value.length==0) {
        alert('Enter the message, please.');
        frm.Message.focus();
        return false;
    } else if (frm.email.value.length==0) {
        if (window.confirm("E-mail is empty and we cannot reply to you personally.\nAre you sure to leave e-mail empty?")) {
            return true;
        }
        frm.email.focus();
        return false;
    }

    OK = re.test(frm.email.value);
    if (!OK) {
        alert ("E-mail is wrong - " + frm.email.value);
        frm.email.focus();
        return false;
    } 

    return true;
}