function checkFields() {
missinginfo = "";

if ((document.forms[0].email.value == "") || 
(document.forms[0].email.value.indexOf('@') == -1) || 
(document.forms[0].email.value.indexOf('.') == -1)) {
missinginfo += "\nEmail Address";
} if ((document.forms[0].name.value == "") || 
(document.forms[0].name.value == "name")) {
missinginfo += "\nName";
} if ((document.forms[0].enquiry.value == "") || 
(document.forms[0].enquiry.value == "enquiry")) {
missinginfo += "\nEnquiry";
}

if (missinginfo != "") {
missinginfo ="Please fill in your:\n" +
missinginfo + "\n\nThanks!";
alert(missinginfo);
return false;
}
else return true;
}