Tiling background

1

got this script of my uncle but he failed to tell me what i should call the background mc or what to change so that i can adapt it (lucky bastard went to japan on business meeting before i could ask -_-)


    var intTilesHorizontal = 15;
    var intTilesVertical = 15;
    var i = 0;
    while (i < intTilesHorizontal) {
        var j = 0;
        while (j < intTilesVertical) {
            var strName = ((("clipTileX" + i) + "Y") + j);
            var intDepth = ((100 * i) + j);
            clipBackground.attachMovie("ClipTile", strName, intDepth);
            clipBackground[strName]._x = clipBackground[strName]._width * i;
            clipBackground[strName]._y = clipBackground[strName]._height * j;
            j++;
        }
        i++;
    }

his site is front72.com ^^

any help is appreciated