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);
  }
}