function ChkFrm(form) {
   var FlagErr=0;
   var ErrMess="Error!\n";

   
   if (form.Company_name.value == "") {
      FlagErr = 1;
      ErrMess += "\nPlease enter Company Name."; 
      form.Company_name.focus();
   }
   if (form.Contact_person.value == "") {
      FlagErr = 1;
      ErrMess += "\nPlease enter Contact Person."; 
      form.Contact_person.focus();
   }
   if (form.Contact_number.value == "") {
      FlagErr = 1;
      ErrMess += "\nPlease enter Contact Number."; 
      form.Contact_number.focus();
   }
   if (form.Email.value == "") {
      FlagErr = 1;
      ErrMess += "\nPlease enter Email."; 
      form.Email.focus();
   }
   if (form.Email.value.indexOf("@") == -1) {
      FlagErr = 1;
      ErrMess += "\nPlease enter a valid Email address."; 
      form.Email.focus();
   }   
   

  if (FlagErr) {
      alert(ErrMess);
      return false; 
   }
   else {
     return true;
   }   
}