function keyenter(field,e)
{
   var key;
   if (window.event)
      key = window.event.keyCode;
   if (key>31)
   if (key<128)
   {
       if (window.event)
        window.event.keyCode=' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُيلا÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key-32);
   }
}