// JavaScript Document
var lastNum;
var currentNum=0;
var maxNum;
var zNum=20;
var changeTime=5000;
var fadeTime=1500;

var lis;
var nodesLen;
var target;

function headerVisualinit(){
	lis=$("ul#headerVisualList li").get();
	nodesLen=lis.length;
	for(var i=0;i<nodesLen;i++){
		$(lis[i]).css('z-index',20-i);
		$(lis[i]).css('display',"block");
		if(i>0){$(lis[i]).fadeTo(0,0);}
	}
	//$("#headerVisualList li").eq(currentNum).fadeTo(fadeTime,1);
	
	maxNum=nodesLen-1;
	setInterval(change,changeTime);

}
function change(){	
	lastNum=currentNum;
	currentNum=Math.ceil(Math.random()*nodesLen-1);
	if(currentNum==0){currentNum=1;}
	if(currentNum==lastNum){currentNum+=1;}
	if(currentNum>=nodesLen){currentNum=nodesLen-1;}
	//lastZnum=50;
	//zNum=100;
	$(lis[lastNum]).fadeTo(fadeTime,0);
	$(lis[lastNum]).css('z-index',50);
	$(lis[currentNum]).fadeTo(fadeTime,1);
	$(lis[currentNum]).css('z-index',100);

}



$(document).ready(headerVisualinit);
//window.onload=headerVisualinit;