// JScript File
String.prototype.mask = function(m) {
    var m, l = (m = m.split("")).length, s = this.split(""), j = 0, h = "";
    for(var i = -1; ++i < l;)
        if(m[i] != "#"){
            if(m[i] == "\\" && (h += m[++i])) continue;
            h += m[i];
            i + 1 == l && (s[j - 1] += h, h = "");
        }
        else{
            if(!s[j] && !(h = "")) break;
            (s[j] = h + s[j++]) && (h = "");
        }
    return s.join("") + h;
};