function checkit (theForm)
{
 if (theForm.Name.value == "")
 {alert("Prosím vyplòte položku \"Jméno\".");
 theForm.Name.focus();
 return (false);}
 if (theForm.Company.value == "")
 {alert("Prosím vyplòte položku \"Firma\".");
 theForm.Company.focus();
 return (false);}
 if (theForm.Email.value == "")
 {alert("Prosím vyplòte položku \"E-mail\".");
 theForm.Email.focus();
 return (false);}
 if (theForm.Phone.value == "")
 {alert("Prosím vyplòte položku \"Telefon\".");
 theForm.Phone.focus();
 return (false);}
 var d=new Date();
 var m = d.getMonth() + 1;
 var ds = d.getDate();
 ds += "." + m;
 ds += "." + d.getFullYear();
 ds += " " + d.getHours();
 m = d.getMinutes();
 if (m <= 9) {
  m = "0" + m;
 }
 ds += ":" + m + ":" + d.getSeconds();
 if (theForm.X2.value > "") theForm.X2.value=ds;
 return (true);
}