// JavaScript Document
function changeTip(tipId, contentId){
	var tip = document.getElementById(tipId);
	var cont = document.getElementById(contentId);
	document.getElementById("tip1").className = "";
	document.getElementById("tip2").className = "";
	document.getElementById("tip3").className = "";
	document.getElementById("tip4").className = "";/**/
	document.getElementById("tip5").className = "";/**/
	document.getElementById("conttip1").style.display = "none";
	document.getElementById("conttip2").style.display = "none";
	document.getElementById("conttip3").style.display = "none";
	document.getElementById("conttip4").style.display = "none";/**/
	document.getElementById("conttip5").style.display = "none";/**/
	tip.className = "active";
	cont.style.display = "block";
	}