function showHide(id) {
	for(var i=0;i<13;i++){
		var obj = document.getElementById(i);
		if (obj) {
		    obj.style.display="none";
		    obj.style.visibility="hidden";
		}
	}
	
	var obj2 = document.getElementById(id);
	if (obj2) {
	    obj2.style.display="block";
	    obj2.style.visibility="visible";
	}
}