function gbrotarychk()
{
 if(document.gbrotary.sname.value == "")
    {
     alert("Enter your name, please.");
     document.gbrotary.sname.focus();
     return false;
    }
 if(document.gbrotary.scity.value == "")
    {
     alert("Enter your city, please.");
     document.gbrotary.scity.focus();
     return false;
    }
   if(document.gbrotary.sfrom.value.indexOf('@') == -1 || document.gbrotary.sfrom.value.indexOf('.') == -1)
    {
     alert("Enter your e-mail, please.");
     document.gbrotary.sfrom.focus();
     return false;
    }
 if(document.gbrotary.stext.value == "")
    {
     alert("Oh, probably something you wanted to tell us, isn't it?");
     document.gbrotary.stext.focus();
     return false;
    }
}