function ValidateForm()
{
if (document.enquiryform.name.value=="") { alert("Please enter your name"); document.enquiryform.name.focus(); return (false); }
if (document.enquiryform.telno.value=="") { alert("Please enter your telephone number"); document.enquiryform.telno.focus(); return (false); }
if (document.enquiryform.email.value=="") { alert("Please enter your email address"); document.enquiryform.email.focus(); return (false); }
if (document.enquiryform.url.value=="") { alert("Please enter your url"); document.enquiryform.url.focus(); return (false); }
if (document.enquiryform.address.value=="") { alert("Please enter your address"); document.enquiryform.address.focus(); return (false); }

return (true);

}