[בניה]

תנסה:

function cp1255_utf8(s) {

  var test = /([à-ú])/g;

  return(s.replace

    (test,

      function($0) {
       // alert($0.charCodeAt(0));
        return(String.fromCharCode(215) + String.fromCharCode(($0.charCodeAt(0)+80)));

      }

    )

  );

}