// JScript File

 function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode;
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }
      function isLetterKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode;
         if (charCode > 31 && (charCode < 65 || charCode > 90)&& (charCode < 97 || charCode > 122) && (charCode<128 || charCode >129)&&(charCode<304 || charCode>305)&&(charCode<350 || charCode>351)&&(charCode<286 || charCode>287)&&(charCode<252 || charCode>252)&&(charCode<220 || charCode>220)&&(charCode<231 || charCode>231)&&(charCode<199 || charCode>199)&&(charCode<246 || charCode>246)&&(charCode<214 || charCode>214) )
            return false;

         return true;
      }
      function isLetterSpaceKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode;
         if (charCode > 31 && (charCode < 65 || charCode > 90)&& (charCode < 97 || charCode > 122) && (charCode<128 || charCode >129)&&(charCode<304 || charCode>305)&&(charCode<350 || charCode>351)&&(charCode<286 || charCode>287)&&(charCode<252 || charCode>252)&&(charCode<220 || charCode>220)&&(charCode<231 || charCode>231)&&(charCode<199 || charCode>199)&&(charCode<246 || charCode>246)&&(charCode<214 || charCode>214)  && (charCode<32 || charCode >33) )
            return false;

         return true;
      }