[monolithed]

Вопрос: как это сделать?

var dictionary = new ActiveXObject("Scripting.Dictionary"), //WScript
     array = ['some1', 'some2', 'some3'], //items
     i = 10; //count

while(i--) {
    if(array[i] != undefined) {
        dictionary.Add(i, array[i]);
   }
}

var j = dictionary.Count, result = [];

while(j--) {
    if(dictionary.Exists(j)) {
        result.unshift((dictionary.Item(j)));
    }
}

WScript.echo(result);

Чтобы посмотреть в IE:

if (window.ActiveXObject) {
    var dictionary = new ActiveXObject("Scripting.Dictionary"), array = ['some1', 'some2', 'some3'], i = 10;

    while(i--) {
        if(array[i] != undefined) {
            dictionary.Add(i, array[i]);
       }
    }

    var j = dictionary.Count, result = [];

    while(j--) {
        if(dictionary.Exists(j)) {
            result.unshift((dictionary.Item(j)));
        }
    }
    alert(result.join(',  '));
}

else {
    alert('This browser does not support ActiveXObject');
}