function showAd(){var myDiv=document.getElementById("marvel_game_ad");myDiv.style.display="block";}
function showGame(){var myDiv=document.getElementById("marvel_game_ad");myDiv.style.display="none";}
function clearAd()
{loadAd('blank.html');return;}
function loadAd(url)
{var iframe=document.getElementById('adFrame');iframe.src=url;}