function validateform(){
if(document.form.note.value==""){
    alert("Enter your message ");
    return false;
}

if(document.form.cust_name.value==""){
    alert("Enter your name ");
    return false;
}
if(document.form.address.value==""){
    alert("Enter the address");
    return false;
}
if(document.form.city.value==""){
    alert("Enter the city");
    return false;
}
if(document.form.cap.value==""){
    alert("Enter value for cap");
    return false;
}

if(document.form.email.value==""){
    alert("Enter email address");
    return false;
}
return true;
}