javascript dosnt seem to be working

im trying to build a minesweeper in html and the javascript isnt woking

heres my html

    
    

        href = "minesweeper.css" >


    
    

    

here is the css

td{
border: 2px outset #000000;
width:25px;
height: 25px;
background-color: #cfcfcf;
  }

and here is the javascript (minesweeper.js)

   var gameBox = document.getElementById("i").innerHTML;
      console.log(gameBox);
     for ( var i = 0 ; i < 3 ; i++ ) {
gameBox += "";
console.log(gameBox);
for ( var j = 0 ; j < 3 ; j++ ) {
    gameBox += "";
}
gameBox += "";
    }

and all i get is a blank page

heres a link to the page
http://borisute.com/geshem/2013/mkeller/minsweeper.html
(it has some more code i didnt include b/c its not relevant to the above problem