window.onload = function() {
	var oBan = document.getElementById("banner01");
	var oWidth = document.getElementById("box").offsetWidth;
	var oStrong = document.getElementsByTagName("strong");
	var oLeft = document.getElementById("left");
	var flag = true;
	var num = 0;
	oBan.onmouseover = function() {
		flag = false;
	}
	oBan.onmouseout = function() {
		flag = true;
	}
	
	var time1 = setInterval(function() {
		if(flag) {
			oLeft.onclick();
		}
	}, 3000)
	
	oLeft.onclick = function() {
		num++;
		if(num == oStrong.length) {
			num = 0;
		}
		//左箭头
		click1(oBan, oStrong, oWidth, num);
		return num;
	}
	for(var j = 0; j < oStrong.length; j++) {
		oStrong[j].index = j;
		oStrong[j].onclick = function() {
			num = this.index;
			//点击圆点
			click1(oBan, oStrong, oWidth, num);
			return num;
		}
	}
	
	var oBan1 = document.getElementById("banner02");
	var oWidth1 = document.getElementById("box01").offsetWidth;
	var oDfn = document.getElementsByTagName("dfn");
	var oLeft1 = document.getElementById("left01");
	var on = true;
	var numa = 0;
	oBan1.onmouseover = function() {
		on = false;
	}
	oBan1.onmouseout = function() {
		on = true;
	}
	
	
	var time2 = setInterval(function() {
		if(on) {
			oLeft1.onclick();
		}
	}, 3000)
	
	oLeft1.onclick = function() {
		numa++;
		if(numa == oDfn.length) {
			numa = 0;
		}
		//左箭头
		click2(oBan1, oDfn, oWidth1, numa);
		return numa;
	}
	for(var j = 0; j < oDfn.length; j++) {
		oDfn[j].index = j;
		oDfn[j].onclick = function() {
			numa = this.index;
			//点击圆点
			click1(oBan1, oDfn, oWidth1, numa);
			return num;
		}
	}
}
function click1(obj, obj2, add, num) {
	for(var i = 0; i < obj2.length; i++) {
		obj2[i].className = "";
	}
	obj2[num].className = "curr";
	obj.style.marginLeft = -add * num + 'px';
}

	
function click2(obj01, obj02, add01, num01) {
	for(var i = 0; i < obj02.length; i++) {
		obj02[i].className = "";
	}
	obj02[num01].className = "curr01";
	obj01.style.marginLeft = -add01 * num01 + 'px';
}