var speed3=40;//速度数值越大速度越慢
var step=1;
var direction="left";

hwqq2.innerHTML=hwqq1.innerHTML;
function Marquee(str){
	if (str=="left"){
		if(hwqq2.offsetWidth-hwqq.scrollLeft<=0)
			hwqq.scrollLeft-=hwqq1.offsetWidth;
		else{
			hwqq.scrollLeft+=step;
		}
		
	}else
	{
		if(hwqq.scrollLeft<=0)
			hwqq.scrollLeft=hwqq2.offsetWidth;
		else{
			hwqq.scrollLeft-=step;
		}
	}
}

var MyMar=setInterval('Marquee(direction)',speed3)

var arrleft=document.getElementById("arrleft");
var arrright=document.getElementById("arrright");

arrleft.onmousedown=function(){clearInterval(MyMar);speed3=speed3-5<1?1:speed3-5;step=10;direction="left";MyMar=setInterval('Marquee(direction)',speed3)}
arrleft.onmouseup=function(){/*clearInterval(MyMar);*/speed3=40;step=1;/*MyMar=setInterval('Marquee("left")',speed3)*/}
arrleft.onmouseover=function(){clearInterval(MyMar);speed3=40;direction="left";MyMar=setInterval('Marquee(direction)',speed3)}
arrleft.onmouseout=function(){/*clearInterval(MyMar);*/speed3=40;/*MyMar=setInterval('Marquee("left")',speed3)*/}

arrright.onmousedown=function(){clearInterval(MyMar);speed3=speed3-5<1?1:speed3-5;step=10;direction="right";MyMar=setInterval('Marquee(direction)',speed3)}
arrright.onmouseup=function(){/*clearInterval(MyMar);*/speed3=40;step=1;/*MyMar=setInterval('Marquee("right")',speed3)*/}
arrright.onmouseover=function(){clearInterval(MyMar);speed3=40;direction="right";MyMar=setInterval('Marquee(direction)',speed3)}
arrright.onmouseout=function(){/*clearInterval(MyMar);*/speed3=40;/*MyMar=setInterval('Marquee("left")',speed3)*/}

hwqq.onmouseover=function() {clearInterval(MyMar)}
hwqq.onmouseout=function() {MyMar=setInterval('Marquee(direction)',speed3)}