var adTimer_0;
var adTimer_1;
var adTimer_2;
var adTimer_3;
var index_0 = 0;
var index_1 = 0;
var index_2 = 0;
var index_3 = 0;
var len_0;
var len_1;
var len_2;
var len_3;
$(function(){
	len_0  = $("#slider_0 > li").length;
	len_1  = $("#slider_1 > li").length;
	len_2  = $("#slider_2 > li").length;
	len_3  = $("#slider_3 > li").length;
	//var len  = $(".slider > li").length;
	$('.ad').hover(function(){
		var plid = this.id;
		if(plid == "ad_0"){
			clearInterval(adTimer_0);
		}else if(plid == "ad_1"){
			clearInterval(adTimer_1);
		}else if(plid == "ad_2"){
			clearInterval(adTimer_2);
		}else if(plid == "ad_3"){
			clearInterval(adTimer_3);
		}
	},function(){
		var plid = this.id;
		var slid;
		if(plid == "ad_0"){
			slid = "slider_0";
			adTimer_0 = setInterval(function(){
				showImg(index_0, plid, slid);
				index_0++;
				if(index_0==len_0){index_0=0;}
				} , 3000);
		}else if(plid == "ad_1"){
			slid = "slider_1";
			adTimer_1 = setInterval(function(){
				showImg(index_1, plid, slid);
				index_1++;
				if(index_1==len_1){index_1=0;}
				} , 3000);
		}else if(plid == "ad_2"){
			slid = "slider_2";
			adTimer_2 = setInterval(function(){
				showImg(index_2, plid, slid);
				index_2++;
				if(index_2==len_2){index_2=0;}
				} , 3000);
		}else if(plid == "ad_3"){
			slid = "slider_3";
			adTimer_3 = setInterval(function(){
				showImg(index_3, plid, slid);
				index_3++;
				if(index_3==len_3){index_3=0;}
				} , 3000);
		}
	}).trigger("mouseleave");
});
function showImg(index,plid, slid){
	/*
	try{
		$("#"+slid).animate({marginTop : -adHeight*index},1000);
	}catch(err){
		alert(err.description);
	}
	*/
	//alert(navigator.userAgent);
	var adHeight;
	if(isIE()) adHeight = $("#"+plid).height() + 4;
	else  adHeight = $("#"+plid).height();
	//alert(adHeight);
	$("#"+slid).animate({marginTop : -adHeight*index},1000);
}
function isIE(){
	//alert(navigator.userAgent);
	
	var IE4 = (navigator.userAgent.indexOf("MSIE 4.")==-1) ? false : true;
	var IE5 = (navigator.userAgent.indexOf("MSIE 5.")==-1) ? false : true;
	var IE6 = (navigator.userAgent.indexOf("MSIE 6.")==-1) ? false : true;
	var IE7 = (navigator.userAgent.indexOf("MSIE 7.")==-1) ? false : true;
	//return true;
	return IE4 || IE5 || IE6 || IE7;
	//return /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent);
}

adTimer_0 = setInterval(function(){
	showImg(index_0, "ad_0", "slider_0");
	index_0++;
	if(index_0==len_0){index_0=0;}
	} , 3000);
adTimer_1 = setInterval(function(){
	showImg(index_1, "ad_1", "slider_1");
	index_1++;
	if(index_1==len_1){index_1=0;}
	} , 3000);
adTimer_2 = setInterval(function(){
	showImg(index_2, "ad_2", "slider_2");
	index_2++;
	if(index_2==len_2){index_2=0;}
	} , 3000);
adTimer_3 = setInterval(function(){
	showImg(index_3, "ad_3", "slider_3");
	index_3++;
	if(index_3==len_3){index_3=0;}
	} , 3000);