add: wide = "" + wide; 
context:   DWREngine._utf8 = function(wide) {    var c;    var s;    var enc = "";    var i = 0;    while (i < wide.length) {      c = wide.charCodeAt(i++);      // handle UTF-16 surrogates      if (c >= 0xDC00 && c < 0xE000) continue;      if (c >= 0xD800 && c < 0xDC00) {        if (i >= wide.length) continue;        s = wide.charCodeAt(i++);        if (s < 0xDC00 || c >= 0xDE00) continue;        c = ((c - 0xD800) << 10) + (s - 0xDC00) + 0x10000;      }      // output value      if (c < 0x80) {        enc += String.fromCharCode(c);      }      else if (c < 0x800) {        enc += String.fromCharCode(0xC0 + (c >> 6), 0x80 + (c & 0x3F));      }      else if (c < 0x10000) {        enc += String.fromCharCode(0xE0 + (c >> 12), 0x80 + (c >> 6 & 0x3F), 0x80 + (c & 0x3F));      }      else {        enc += String.fromCharCode(0xF0 + (c >> 18), 0x80 + (c >> 12 & 0x3F), 0x80 + (c >> 6 & 0x3F), 0x80 + (c & 0x3F));      }    }    return enc;  }
meta: 266	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/266/75e672fb937d6fb137081eb46b50e58a374aa739/engine.js/buggy/java/uk/ltd/getahead/dwr/engine.js