function checkenquiryFields() { 

if (document.Contactus.txtName.value == "") { 
alert("Details incorrect. Please enter your Name."); 
document.Contactus.txtName.focus(); return;

}

if (document.Contactus.txtEmail.value.indexOf("@")<3){ // checks for at least 3 characters before the @

alert("The email entered appears to be incorrect - please check the username and format of the email that it contains '@' ");
document.Contactus.txtEmail.focus(); return;

}

if (document.Contactus.txtFound.value == "Null") { 
alert("Details incorrect. Please enter how you found us."); 
document.Contactus.Found.focus(); return;

}

else {  // if none of the fields have any errors then submit the form

document.Contactus.submit(); // In this document,  submit the form called notify

}


}