function checkForm() {

if (checkField('Email Address','The Email Address field is required.')==false) {return false;};


}

function checkField(fieldName,Message) {
if (document.subscribeForm.elements[fieldName].value.length > 0) {
return true;
} else {
alert(Message);
document.subscribeForm.elements[fieldName].focus();
return false;
}
}

function emailvalidation(entered, alertbox) {
with (entered) {
apos=value.indexOf("@");
dotpos=value.lastIndexOf(".");
lastpos=value.length-1;
if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2) {
if (alertbox) {
alert(alertbox);
} 
return false;
}
else {
return true;
}
}
}