function checkemail (form)
{	
  if (form.name.value == "") {
    alert("Please enter your full name.");
    form.name.focus();
    return false;
  }
  	
  if (form.company.value == "") {
    alert("Please enter your company name.");
    form.company.focus();
    return false;
  }
  		
  if (form.email.value == "") {
    alert("Please enter your email address.");
    form.email.focus();
    return false;
  }
  
  if (form.message.value == "") {
    alert("Please enter your message.");
    form.message.focus();
    return false;
  }
  	return true;		
}