function eingabe()
{
	if (window.document.forms[0].nachname.value=="")
	{alert ("Please fill in: n a m e !"); window.document.forms[0].nachname.focus(); return false;}
	if (window.document.forms[0].firma.value=="")
	{alert ("Please fill in: c o m p a n y !"); window.document.forms[0].e_mail.focus(); return false;}
	if (window.document.forms[0].e_mail.value=="")
	{alert ("Please fill in: e - m a i l !"); window.document.forms[0].e_mail.focus(); return false;}
}