function checkform ( form )
{
	  if (form.name.value == "") {
	alert( "Please enter your name." );
	form.name.focus();
	return false ;
  }
   if (form.phone.value == "") {
	alert( "Please enter telephone number" );
	form.phone.focus();
	return false ;
  }	
  apos=document.form.email.value.indexOf("@")
  dotpos=document.form.email.value.lastIndexOf(".")
  if (document.form.email.value == "" || apos<1 || dotpos-apos<2)
	{
	alert("Your email address is invalid, please fix:")
	document.form.email.focus()
	return false
	}
   if (form.enquiry.value == "") {
	alert( "Please fill you your enquiry." );
	form.enquiry.focus();
	return false ;
  }
  if (form.confirm_image.value == "") {
	alert( "Please the graphic validation code." );
	form.confirm_image.focus();
	return false ;
  }
return true
}