function reset() {
document.tellafriend.name.value="";
document.tellafriend.email.value="";
document.tellafriend.friendmail1.value="";
document.tellafriend.friendmail2.value="";
document.tellafriend.friendmail3.value="";
}

function validate() {


if (document.tellafriend.friendmail1.value.length==0) {
alert("please enter your friend's email address");
return false;
}

if (document.tellafriend.email.value.length==0) {
alert("please enter your email address");
return false;
}
if (document.tellafriend.name.value.length==0) {
alert("please enter your name");
return false;
}

document.tellafriend.submit()
return true;
}


function isEmail(theField, emptyOK) {
	if (isEmail.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    var s = theField.value;
    var emailReg = "^[A-Z0-9a-z][A-Z0-9a-z_\.\-]+\@[A-Z0-9a-z][A-Z0-9a-z\.\-]*[\.][A-Z0-9a-z]+[A-Z0-9a-z]$";
    var regex = new RegExp(emailReg);
    return (regex.test(s));    
}