// JavaScript Document


function init(ids,cons,dis){
	 	document.getElementById(ids).getElementsByTagName('li')[0].className='active';
		document.getElementById(cons).innerHTML=document.getElementById(dis+"l1").innerHTML;
		document.getElementById(ids).onmouseover=function(){onmousOver(ids,cons,dis);}//鼠标指向激发效果
//		document.getElementById(ids).onclick=function(){onmousOver(ids,cons,dis);}//点击激发效果
}
function onmousOver(ids,cons,dis){
o = o || window.event;
var obj=o.target || o.srcElement;
if (obj.tagName=='LI'){
		if (obj.className=='active'||obj.id=='more')return;
		var o=document.getElementById(ids).getElementsByTagName('li');
		for (var i=0;i<=o.length-1;i++){o[i].className='default'}
		
		obj.className='active';
		if (obj.className=='active'){document.getElementById(cons).innerHTML=document.getElementById(dis+obj.id).innerHTML;}
}
}


var n=0;
var showNum = document.getElementById("num");
function Mea(value){
	n=value;
	setBg(value);
	plays(value);
	}
function setBg(value){
	for(var i=0;i<5;i++){
	   if(value==i){
	     document.getElementById("a"+value).className='act';      
			}	else{	
			 document.getElementById("a"+i).className='nor';
			}  
	} 
}
function plays(value){ 
		 for(i=0;i<5;i++){
			  if(i==value){			  
			  	document.getElementById("pc_"+value).style.display="block";
			  	//alert(document.getElementById("pc_"+value).style.display)
			  }else{
			    document.getElementById("pc_"+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);
} 
function sub(){
	n--;
	if(n<0)n=4;
	Mea(n);
} 
setAuto();