function submitform()
{
 if(document.enquiry.onsubmit())
 {
 document.enquiry.submit();
 }
}

function validateForm(whichform) {
    for (var i = 0; i < whichform.elements.length; i++) {
        var element = whichform.elements[i];
        if (element.className.indexOf("required") != -1) {
            if (!isFilled(element)) {
                alert("Please fill in the "+element.name+" field. Thanks.");
                return false;
            }
        }
        if (element.className.indexOf("email") != -1) {
            if (!isEmail(element)) {
                alert("This does not appear to be a valid email address. Try again.");
                return false;
            }
        }
    }
    return true;
}

function isFilled(field) {
    if (field.value.length < 1 || field.value == field.defaultValue) {
        return false;
    } else {
        return true;
    }
}

function isEmail(field) {
    if (field.value.indexOf("@") == -1 || field.value.indexOf(".") == -1) {
        return false;
    } else {
        return true;
    }
}