网页特效代码，网易学院的新闻图片切换特效，有文字详细说明，还能自动切换
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>新闻切换技术</title> <style type="text/css"> <!-- body { text-align: left; margin:0; padding:0; background: #FFF; font-size:12px; color:#000;} div,form,img,ul,ol,li,dl,dt,dd {margin: 0; padding: 0; border: 0;} h1,h2,h3,h4,h5,h6 { margin:0; padding:0;} table,td,tr,th{font-size:12px;} a:link {color: #000; text-decoration:none;} a:visited {color: #83006f;text-decoration:none;} a:hover {color: #c00; text-decoration:underline;} a:active {color: #000;} .focusPic{margin:0 auto; width:244px;} .focusPic .pic{margin:0 auto; width:240px; height:180px; padding:2px 0 0;} .focusPic .adPic{margin:0 auto 5px; width:240px; height:29px; overflow:hidden;background:url(http://tech.163.com/newimg/adpic.gif);} .focusPic .adPic .text{float:right; padding:9px 4px 0 0; width:140px;} .focusPic .adPic .text a{color:#1f3a87;} .focusPic .adPic .text a:hover{color:#bc2931;} .focusPic h2{ float:left; width:232px;padding:4px 0 3px 12px; font-size:14px; text-align:left;} .focusPic p{float:left; width:226px;line-height:160%; margin:0; text-align:left;padding:0 0 10px 12px;} .focusPic p img {margin:0px 0 2px;} .focusPic .more{ margin:0 auto; width:240px; } .focusPic .more .textNum{float:right; margin:0 8px 0 0;padding:0 0 4px;} .focusPic .more .textNum .text{float:left; font-weight:bold; padding:7px 6px 0 0; color:#666;} .focusPic .more .textNum .num{float:left; width:113px; height:19px;} .focusPic .more .textNum .bg1{ background:url(http://tech.163.com/newimg/num1.gif);} .focusPic .more .textNum .bg2{ background:url(http://tech.163.com/newimg/num2.gif);} .focusPic .more .textNum .bg3{ background:url(http://tech.163.com/newimg/num3.gif);} .focusPic .more .textNum .bg4{ background:url(http://tech.163.com/newimg/num4.gif);} .focusPic .more .textNum .num ul{ float:left; width:113px;} .focusPic .more .textNum .num li{float:left; width:28px; font-weight:bold;display:block; color:#fff; list-style-type:none; padding:6px 0 0;} .focusPic .more .textNum .num li a{color:#fff; padding:0 5px; } .focusPic .more .textNum .num li a:visited{color:#fff;} .focusPic .more .textNum .num li a:hover{color:#ff0;} --> </style> </head> <body> <script language="JavaScript" type="text/javascript"> var nn; nn=1; setTimeout('change_img()',6000); function change_img() { if(nn>4) nn=1 setTimeout('setFocus1('+nn+')',6000); nn++; tt=setTimeout('change_img()',6000); } function setFocus1(i) { selectLayer1(i); } function selectLayer1(i) { switch(i) { case 1: document.getElementById("focusPic1").style.display="block"; document.getElementById("focusPic2").style.display="none"; document.getElementById("focusPic3").style.display="none"; document.getElementById("focusPic4").style.display="none"; document.getElementById("focusPic1nav").style.display="block"; document.getElementById("focusPic2nav").style.display="none"; document.getElementById("focusPic3nav").style.display="none"; document.getElementById("focusPic4nav").style.display="none"; break; case 2: document.getElementById("focusPic1").style.display="none"; document.getElementById("focusPic2").style.display="block"; document.getElementById("focusPic3").style.display="none"; document.getElementById("focusPic4").style.display="none"; document.getElementById("focusPic1nav").style.display="none"; document.getElementById("focusPic2nav").style.display="block"; document.getElementById("focusPic</body></html>
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