// -- required form fields for Contact page:
function checkFields() {
missinginfo = "";
if (document.form.name.value == "") {
missinginfo += "\n     -  name";
}
if ((document.form.email.value == "") || 
(document.form.email.value.indexOf('@') == -1) || 
(document.form.email.value.indexOf('.') == -1)) {
missinginfo += "\n     -  valid email";
}
if(document.form.message.value == "") {
missinginfo += "\n     -  message";
}
if (missinginfo != "") {
missinginfo ="Please fill in the following fields:\n" +
missinginfo + "\n\nThanks!";
alert(missinginfo);
return false;
}
else return true;
}