function doClick_tab(name, no, o) {
  	if (o == "tab_t1") {
		o = document.getElementById(o);
	    o.className = "current";
	} else {
		o = document.getElementById(o);
	    o.className = "current tab_t2";
		}
	var j;
	var id;
	var e;
	for (var i = 1; i <= no; i++) {
		id = name + "_t" + i;
		j = document.getElementById(id);
		e = document.getElementById(name + "_c" + i);
		m = document.getElementById(name + "_m" + i);
		if (id != o.id) {
			j.className = "";
			e.style.display = "none";
			m.style.display = "none";
		} else {
			e.style.display = "block";
			m.style.display = "block";
		}
	}
}