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js循环滚动切换首页幻灯片，仿优酷电影首页，自动循环滚动，兼容主流浏览器。function getStyle(obj,name){ if(obj.currentStyle) { return obj.currentStyle[name] } else { return getComputedStyle(obj,false)[name] }}function getByClass(oParent,nClass){ var eLe = oParent.getElementsByTagName('*'); var aRrent = []; for(var i=0; i0?Math.ceil(speed):Math.floor(speed); if(cutt==add) { clearInterval(obj.timer) } else { if(att=='opacity') { obj.style.opacity = (cutt+speed)/100; obj.style.filter = 'alpha(opacity:'+(cutt+speed)+')'; } else { obj.style[att] = cutt+speed+'px'; } } },30)} window.onload = function() { var oDiv = document.getElementById('playBox'); var oPre = getByClass(oDiv,'pre')[0]; var oNext = getByClass(oDiv,'next')[0]; var oUlBig = getByClass(oDiv,'oUlplay')[0]; var aBigLi = oUlBig.getElementsByTagName('li'); var oDivSmall = getByClass(oDiv,'smalltitle')[0] var aLiSmall = oDivSmall.getElementsByTagName('li'); function tab() { for(var i=0; i

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