function showAd(adType){
	hideAd();
	switch(adType){
	case 0:
			/*
			the_obj = document.getElementById("ad_234x60");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_234x60");
			the_obj.src = "ad_234x60.html";
			*/

			the_obj = document.getElementById("ad_728x90");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_728x90");
			the_obj.src = "ad_728x90.html";

			/*
			the_obj = document.getElementById("ad_160x600");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_160x600");
			the_obj.src = "ad_160x600.html";
			*/

			the_obj = document.getElementById("ad_300x250");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_300x250");
			the_obj.src = "ad_300x250.html";
			break;
	case 1:
			/*
			the_obj = document.getElementById("ad_234x60");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_234x60");
			the_obj.src = "ad_234x60.html";
			*/

			the_obj = document.getElementById("ad_728x90");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_728x90");
			the_obj.src = "ad_728x90.html";

			the_obj = document.getElementById("ad_160x600");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_160x600");
			the_obj.src = "ad_160x600.html";
			
			/*
			the_obj = document.getElementById("ad_300x250");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_300x250");
			the_obj.style.src = "ad_300x250.html";
			*/
			break;
	case 2:
			/*
			the_obj = document.getElementById("ad_234x60");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_234x60");
			the_obj.src = "ad_234x60.html";
			*/

			the_obj = document.getElementById("ad_728x90");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_728x90");
			the_obj.src = "ad_728x90.html";

			/*
			the_obj = document.getElementById("ad_160x600");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_160x600");
			the_obj.src = "ad_160x600.html";
			*/

			/*
			the_obj = document.getElementById("ad_300x250");
			the_obj.style.visibility = "visible";
			the_obj = document.getElementById("frame_300x250");
			the_obj.style.src = "ad_300x250.html";
			*/
			break;
	}
}

function hideAd(){
	the_obj = document.getElementById("ad_234x60");
	the_obj.style.visibility = "hidden";

	the_obj = document.getElementById("ad_728x90");
	the_obj.style.visibility = "hidden";

	the_obj = document.getElementById("ad_160x600");
	the_obj.style.visibility = "hidden";

	the_obj = document.getElementById("ad_300x250");
	the_obj.style.visibility = "hidden";
}