// JavaScript Document

	function toggle_span(id){
		var el = document.getElementById(id);
		el.style.height = (el.style.height != "auto") ? "auto" : "0px";
		el.style.visibility = (el.style.visibility != "visible") ? "visible" : "hidden";

	}


	function toggle_dos(){
		toggle_span("what_not_to_do");
		toggle_span("what_to_do");
	}