网页制作滚动代码.doc

var speed=30 butong_net_top2.innerHTML=butong_net_top1.innerHTML /克隆butong_net_top1为butong_net_top2 function Marquee1() /当滚动至butong_net_top1与butong_net_top2交界时 if(butong_net_top2.offsetTop-butong_net_top.scrollTop=0) butong_net_top.scrollTop-=butong_net_top1.offsetHeight /butong_net_top跳到最顶端 else butong_net_top.scrollTop+; var MyMar1=setInterval(Marquee1,speed)/设置定时器 /鼠标移上时清除定时器达到滚动停止的目的 butong_net_top.onmouseover=function() clearInterval(MyMar1) /鼠标移开时重设定时器 butong_net_top.onmouseout=function()MyMar1=setInterval(Marquee1,speed) var speed=30 butong_net_bottom2.innerHTML=butong_net_bottom1.innerHTML butong_net_bottom.scrollTop=butong_net_bottom.scrollHeight function Marquee2() if(butong_net_bottom1.offsetTop-butong_net_bottom.scrollTop=0) butong_net_bottom.scrollTop+=butong_net_bottom2.offsetHeight else butong_net_bottom.scrollTop- var MyMar2=setInterval(Marquee2,speed) butong_net_bottom.onmouseover=function() clearInterval(MyMar2) butong_net_bottom.onmouseout=function() MyMar2=setInterval(Marquee2,speed) img src=var speed=30/速度数值越大速度越慢butong_net_left2.innerHTML=butong_net_left1.innerHTMLfunction Marquee3()if(butong_net_left2.offsetWidth-butong_net_left.scrollLeft=0)butong_net_left.scrollLeft-=butong_net_left1.offsetWidthelsebutong_net_left.scrollLeft+var MyMar3=setInterval(Marquee3,speed)butong_net_left.onmouseover=function() clearInterval(MyMar3)butong_net_left.onmouseout=function() MyMar3=setInterval(Marquee3,speed)var speed=30/速度数值越大速度越慢butong_net_right2.innerHTML=butong_net_right1.innerHTMLfunction Marquee4()if(butong_net_right.scrollLeft=0)butong_net_right.scrollLeft+=butong_net_right2.offsetWidthelsebutong_net_right.scrollLeft-var MyMar4=setInterval(Marquee4,speed)butong_net_right.onmouseover=function() cle