A hacky alternative to function.apply and function.call in cases where those will not work.

applyDirect.js

(function(window, undefined) {
"use strict";

// @function  func.apply( thisArg [, argsArray ] )
// @function  func.call ( thisArg [, arg1 [, arg2 [, ...] ] ] )

var _applyIndirect = function(func, thisArg, argsArray) {
    Function.prototype.apply.call(func, thisArg, argsArray);
};

var _applyDirect = function(func, argsArray) {
    var a = Array.prototype.slice.call(argsArray);
    switch (a.length) {
        case  0: return func();
        case  1: return func(a[0]);
        case  2: return func(a[0],a[1]);
        case  3: return func(a[0],a[1],a[2]);
        case  4: return func(a[0],a[1],a[2],a[3]);
        case  5: return func(a[0],a[1],a[2],a[3],a[4]);
        case  6: return func(a[0],a[1],a[2],a[3],a[4],a[5]);
        case  7: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
        case  8: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
        case  9: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
        case 10: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
        case 11: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10]);
        case 12: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11]);
        case 13: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12]);
        case 14: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13]);
        case 15: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13],a[14]);
        case 16: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13],a[14],a[15]);
        case 17: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13],a[14],a[15],a[16]);
        case 18: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13],a[14],a[15],a[16],a[17]);
        case 19: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13],a[14],a[15],a[16],a[17],a[18]);
        case 20: return func(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],a[10],a[11],a[12],a[13],a[14],a[15],a[16],a[17],a[18],a[19]);
        default: throw new Error('Unsuppoted number of arguments');
    }
};

/// Simulate the call functionality but without using apply or call.
/// @remarks
/// Limited to functions with less then 20 arguments. 
function.prototype.callDirect = function(/* arg, ... */) { _applyDirect(this, arguments); };

/// Simulate the apply functionality but without using apply or call.
/// @remarks
/// Limited to functions with less then 20 arguments.
function.prototype.applyDirect = function(args) { _applyDirect(this, args); };

})(window);