randomly generated simple terrain

I'm trying to make a tile-based strategy game. I've never done tile-based before, so I'm kinda lost.

Here's what I have:

Code:

---

map = new Array(10,10);


tileW = 40;
tileH = 40;
function buildMap (map1) {
        var mapWidth = map1[0].length;
        var mapHeight = map1.length;
        for (var i = 0; i<mapHeight; ++i) {
                for (var j = 0; j<mapWidth; ++j) {
                        this.attachMovie("tile", "t_"+i+"_"+j, ++d);
                        this["t_"+i+"_"+j]._x = (j*tileW);
                        this["t_"+i+"_"+j]._y = (i*tileH);
                        this["t_"+i+"_"+j].gotoAndStop(map1[i][j]+1);
                }
        }
}
buildMap(map);

---

as it is, it doesn't work because I can't seem to figure out how to randomly generate a 10x10 terrain. I know it has something to do with for-loops, but i don't know how to put a random number(0 or 1) into the map array.

any help is appreciated

thanks

instead of 'map = new Array(10,10)' use:

map = randomArray(10,10,<NUMBER OF TILES YOU HAVE>);

and then above that place:

function randomArray(w,h,num){
var arr = new Array();
for(var y = 0;y < h;y++){
arr[y] = new Array();
for(var x = 0;x < w;x++){
arr[y][x] = random(num);
}
}
return arr;
}

and you'll have your random map.

thank you very much!