//ÓÒ²àÇл»
function swap_tab(n){
	for(var i=1;i<=4;i++){
		var curC=document.getElementById("tab_"+i);
		var curB=document.getElementById("tab_t"+i);
		if(n==i){
			curC.style.display="block";
			curB.className="active"
		}else{
			curC.style.display="none";
			curB.className="normal"
		}
	}
} 
//ÓÒ²àÇл»2
function swap_tab2(n){
	for(var i=1;i<=2;i++){
		var curC=document.getElementById("tab2_"+i);
		var curB=document.getElementById("tab2_t"+i);
		if(n==i){
			curC.style.display="block";
			curB.className="active"
		}else{
			curC.style.display="none";
			curB.className="normal"
		}
	}
} 

function runCode(obj) {
    var code = obj.value;
    var newwin = window.open("", "", "");
    newwin.opener = null;
    newwin.document.write(code);
    newwin.document.close();
}

function externalLinks() { 
 if (!document.getElementsByTagName) return; 
 var anchors = document.getElementsByTagName("a"); 
 for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "external") 
     anchor.target = "_blank"; 
 } 
} 
window.onload = externalLinks;

//½¹µãͼ
var n=0;
function Mea(value){
	n=value;
	setBg(value);
	plays(value);
	}
function setBg(value){
	for(var i=0;i<5;i++)
	document.getElementById("t"+i+"").className="bbg0";
	document.getElementById("t"+value+"").className="bbg1";
	} 
function plays(value){
	try
	{
		with (au){
			filters[0].Apply();
			for(i=0;i<5;i++)i==value?children[i].style.display="block":children[i].style.display="none"; 
			filters[0].play(); 		
			}
	}
	catch(e)
	{
		var d = document.getElementById("au").getElementsByTagName("div");
		for(i=0;i<5;i++)i==value?d[i].style.display="block":d[i].style.display="none"; 
	}
}
function clearAuto(){clearInterval(autoStart)}
function setAuto(){autoStart=setInterval("auto(n)", 3000)}
function auto(){
	n++;
	if(n>4)n=0;
	Mea(n);
} 
setAuto();