function toggleDiv(GameAreaNumber, GameUrl, NumberOfGames){
    for (i = 1; i <= NumberOfGames; i++){
        document.getElementById('GameArea' + i + '').style.visibility = "hidden";
        document.getElementById('ScreensArea' + i + '').style.visibility = "hidden";
    }
    document.getElementById('GameArea' + GameAreaNumber + '').style.visibility = "visible";
    document.getElementById('ScreensArea' + GameAreaNumber + '').style.visibility = "visible";
    document.getElementById('ctl00_MainContent_GameTextbox').value = GameUrl;
}