function validate(contact) {
var passed = true;

if (contact.your_name.value == "") {
passed = false;
window.alert("Please enter your name");
contact.your_name.focus();
return false;
}

if (contact.email_address.value == "") {
passed = false;
window.alert("Please enter your email address");
contact.email_address.focus();
return false;
}

if (contact.your_comments.value == "") {
passed = false;
window.alert("Please enter your comments");
contact.your_comments.focus();
return false;
}

window.status=passed;
return window.status;
}