function summon(e) {
			if (document.getElementById) {
				ghost = document.getElementById(e);
				if (ghost.style.visibility != 'visible') {
					ghost.style.visibility = 'visible';
				} else {
					ghost.style.visibility = 'hidden';
				}
				/*if (ghost.addEventListener) {
					ghost.addEventListerner("click",summon("top_card"),false);
				} else if (ghost.attachEvent) {
					ghost.attachEvent("onclick",summon("top_card"));
				}*/
			}
		}