Number.prototype.nf = function( decimals, dec_point, thousands_sep ) {

    var n = this, c = isNaN(decimals = Math.abs(decimals)) ? 2 : decimals;
    var d = dec_point == undefined ? "," : dec_point;
    var t = thousands_sep == undefined ? "." : thousands_sep, s = n < 0 ? "-" : "";
    var i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", j = (j = i.length) > 3 ? j % 3 : 0;
    
    return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
}

Array.prototype.in_array = function( needle ) {
  for( var i=0; i < this.length; i++ ) {
    if( this[i] === needle ) {
      return true;
    }
  }
  return false;
}

String.prototype.wordWrap = function(m, b, c){
  var i, j, s, r = this.split("\n");
    if(m > 0) for(i in r){
        for(s = r[i], r[i] = ""; s.length > m;
            j = c ? m : (j = s.substr(0, m).match(/\S*$/)).input.length - j[0].length
            || m,
            r[i] += s.substr(0, j) + ((s = s.substr(j)).length ? b : "")
        );
        r[i] += s;
    }
    return r.join("\n");

};