// JavaScript Document
function setTab(n){
	 var tli=document.getElementById("tabmenu").getElementsByTagName("li");
	 var mli = document.getElementById("main1").getElementsByTagName("ul");
	 
	 for(i=0;i<tli.length;i++){
	  tli[i].className=i==n?"hover":"";
	  mli[i].style.display=i==n?"block":"none";
	 }
}