function checkEnquiry()
{
with(document.enquiry)
{

	 // Full name must be entered
     if (name.value.length <= 0)
     {
        alert ("Please enter your name");
        name.focus();
        return false;
     }

	 // Either email address or phone number
     else if (email.value.length <= 0 && phone.value.length <= 0) {
        alert ("Please enter either your email address or telephone number");
        email.focus();
        return false;
     }
	
	// Enquiry text must be entered
    else if (msg.value.length <= 0)
    {
		alert ("Please enter your enquiry");
		msg.focus();
        return false
     }

return true;

}

}