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我想对于这个焦点图片轮换大家都不陌生吧.不过原来的是FLASH版的.今天偶然看到一个JS版的.效果很酷.在这和大家分享下.

< !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=utf-8" /> <title>佐佐制造byzuo.cn---焦点图片第三季</title> <style type="text/css"> /* Reset style */ * { margin:0; padding:0; word-break:break-all; } body { background:#FFF; color:#333; font:12px/1.6em Helvetica, Arial, sans-serif; } h1, h2, h3, h4, h5, h6 { font-size:1em; } a { color:#0287CA; text-decoration:none; } a:hover { text-decoration:underline; } ul, li { list-style:none; } fieldset, img { border:none; } legend { display:none; } em, strong, cite, th { font-style:normal; font-weight:normal; } input, textarea, select, button { font:12px Helvetica, Arial, sans-serif; } table { border-collapse:collapse; } html { overflow:-moz-scrollbars-vertical; } /*Always show Firefox scrollbar*/ /* iFocus style */ #ifocus { width:525px; height:245px; margin:20px; border:1px solid #DEDEDE; background:#F8F8F8; } #ifocus_pic { display:inline; position:relative; float:left; width:410px; height:225px; overflow:hidden; margin:10px 0 0 10px; } #ifocus_piclist { position:absolute; } #ifocus_piclist li { width:410px; height:225px; overflow:hidden; } #ifocus_piclist img { width:410px; height:225px; } #ifocus_btn { display:inline; float:right; width:91px; margin:9px 9px 0 0; } #ifocus_btn li { width:91px; height:57px; cursor:pointer; opacity:0.5; -moz-opacity:0.5; filter:alpha(opacity=50); } #ifocus_btn img { width:75px; height:45px; margin:7px 0 0 11px; } #ifocus_btn .current { background: url(http://www.byzuo.cn/demo/iFocus/img/ifocus_btn_bg.gif) no-repeat; opacity:1; -moz-opacity:1; filter:alpha(opacity=100); } #ifocus_opdiv { position:absolute; left:0; bottom:0; width:410px; height:35px; background:#000; opacity:0.5; -moz-opacity:0.5; filter:alpha(opacity=50); } #ifocus_tx { position:absolute; left:8px; bottom:8px; color:#FFF; } #ifocus_tx .normal { display:none; } </style> <script type="text/javascript"> function $(id) { return document.getElementById(id); } function addLoadEvent(func){ var oldonload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function(){ oldonload(); func(); } } } function moveElement(elementID,final_x,final_y,interval) { if (!document.getElementById) return false; if (!document.getElementById(elementID)) return false; var elem = document.getElementById(elementID); if (elem.movement) { clearTimeout(elem.movement); } if (!elem.style.left) { elem.style.left = "0px"; } if (!elem.style.top) { elem.style.top = "0px"; } var xpos = parseInt(elem.style.left); var ypos = parseInt(elem.style.top); if (xpos == final_x && ypos == final_y) { return true; } if (xpos < final_x) { var dist = Math.ceil((final_x - xpos)/10); xpos = xpos + dist; } if (xpos > final_x) { var dist = Math.ceil((xpos - final_x)/10); xpos = xpos - dist; } if (ypos < final_y) { var dist = Math.ceil((final_y - ypos)/10); ypos = ypos + dist; } if (ypos > final_y) { var dist = Math.ceil((ypos - final_y)/10); ypos = ypos - dist; } elem.style.left = xpos + "px"; elem.style.top = ypos + "px"; var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")"; elem.movement = setTimeout(repeat,interval); } function classNormal(iFocusBtnID,iFocusTxID){ var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li'); var iFocusTxs = $(iFocusTxID).getElementsByTagName('li'); for(var i=0; i<ifocusbtns .length; i++) { iFocusBtns[i].className='normal'; iFocusTxs[i].className='normal'; } } function classCurrent(iFocusBtnID,iFocusTxID,n){ var iFocusBtns= $(iFocusBtnID).getElementsByTagName('li'); var iFocusTxs = $(iFocusTxID).getElementsByTagName('li'); iFocusBtns[n].className='current'; iFocusTxs[n].className='current'; } function iFocusChange() { if(!$('ifocus')) return false; $('ifocus').onmouseover = function(){atuokey = true}; $('ifocus').onmouseout = function(){atuokey = false}; var iFocusBtns = $('ifocus_btn').getElementsByTagName('li'); var listLength = iFocusBtns.length; iFocusBtns[0].onmouseover = function() { moveElement('ifocus_piclist',0,0,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',0); } if (listLength>=2) { iFocusBtns[1].onmouseover = function() { moveElement('ifocus_piclist',0,-225,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',1); } } if (listLength>=3) { iFocusBtns[2].onmouseover = function() { moveElement('ifocus_piclist',0,-450,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',2); } } if (listLength>=4) { iFocusBtns[3].onmouseover = function() { moveElement('ifocus_piclist',0,-675,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',3); } } } setInterval('autoiFocus()',5000); var atuokey = false; function autoiFocus() { if(!$('ifocus')) return false; if(atuokey) return false; var focusBtnList = $('ifocus_btn').getElementsByTagName('li'); var listLength = focusBtnList.length; for(var i=0; i<listlength ; i++) { if (focusBtnList[i].className == 'current') var currentNum = i; } if (currentNum==0&&listLength!=1 ){ moveElement('ifocus_piclist',0,-225,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',1); } if (currentNum==1&&listLength!=2 ){ moveElement('ifocus_piclist',0,-450,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',2); } if (currentNum==2&&listLength!=3 ){ moveElement('ifocus_piclist',0,-675,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',3); } if (currentNum==3 ){ moveElement('ifocus_piclist',0,0,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',0); } if (currentNum==1&&listLength==2 ){ moveElement('ifocus_piclist',0,0,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',0); } if (currentNum==2&&listLength==3 ){ moveElement('ifocus_piclist',0,0,5); classNormal('ifocus_btn','ifocus_tx'); classCurrent('ifocus_btn','ifocus_tx',0); } } addLoadEvent(iFocusChange); </script> </listlength></ifocusbtns></script></head> <body> <div id="ifocus"> <div id="ifocus_pic"> <div id="ifocus_piclist" style="left:0; top:0;"> <ul> <li><a href="#"><img src="http://www.byzuo.cn/demo/iFocus/img/01.jpg" alt="" /></a></li> <li><a href="#"><img src="http://www.byzuo.cn/demo/iFocus/img/02.jpg" alt="" /></a></li> <li><a href="#"><img src="http://www.byzuo.cn/demo/iFocus/img/03.jpg" alt="" /></a></li> <li><a href="#"><img src="http://www.byzuo.cn/demo/iFocus/img/04.jpg" alt="" /></a></li> </ul> </div> <div id="ifocus_opdiv"></div> <div id="ifocus_tx"> <ul> <li class="current">火箭85-78马刺姚明依旧像新秀a1</li> <li class="normal">阿德尔曼：姚明进攻太犹豫火箭还有很长路要走b2</li> <li class="normal">阿联脚伤未出场卡特意外受伤网队加时险胜热队c3</li> <li class="normal">帕杜惊讶能留住郑智英媒称查尔顿升超要靠d4</li> </ul> </div> </div> <div id="ifocus_btn"> <ul> <li class="current"><img src="http://www.byzuo.cn/demo/iFocus/img/btn_01.jpg" alt="" /></li> <li class="normal"><img src="http://www.byzuo.cn/demo/iFocus/img/btn_02.jpg" alt="" /></li> <li class="normal"><img src="http://www.byzuo.cn/demo/iFocus/img/btn_03.jpg" alt="" /></li> <li class="normal"><img src="http://www.byzuo.cn/demo/iFocus/img/btn_04.jpg" alt="" /></li> </ul> </div> </div> </body> </html>

提示：你可以先修改部分代码再运行。

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