<a></a>去外层虚线方法：a:focus{outline:none;-moz-outline:none;}
图片放大方法1：
<style type="text/css"> .xt{ width:230px; height:230px;} .tp{ width:230px; height:230px; overflow:hidden;} .tp img{transition:all 1s ease-out 0s; margin-left:0px; margin-top:0px; perspective-origin:bottom;} </style> <body> <div class="tp"> <img class="xt" onmouseover="Bian(this)" onmouseout="Hui(this)" src="c320_20160923147459793296513.jpg"/> </div> </body> <script type="text/javascript"> function Bian(a) { a.style.marginTop = "-10px"; a.style.marginLeft = "-10px"; a.style.height=" 260px"; a.style.width= "260px"; } function Hui(a) { a.style.height=" 230px"; a.style.width= "230px"; a.style.marginTop = "0px"; a.style.marginLeft = "0px"; } </script>
图片放大方法二：（只调整鼠标样式实现图片放大） <style type="text/css"> *{ margin:0px auto; padding:0px; font-size:15px; font-family:微软雅黑;} #a{ width:300px; height:300px; margin-top:150px; overflow:hidden;} .b{width:300px; height:300px; cursor:pointer; margin-top:0px; margin-left:0px; } .b:hover{ width:350px; height:350px; margin-top:-25px; margin-left:-25px; transition: all 1s ease-in-out 0s; } </style> </head> <body> <div id="a"> <img class="b" src="a6.png" /> </div> </body>
2.中间菜单栏位置随滚轮移动固定方法：
<style type="text/css"> .t{ width:990px; height:80px; background-color:#F00; font-size:23px;} </style> <body> <div style="100%; height:80px; background-color:#000; position:fixed;"></div> <div style="200px; height:300px; background-color:#00F;"></div> <div class="t"></div> <div style="800px; height:1000px; background-color:#09F;"></div> </body> <script type="text/javascript"> $(document).ready(function(e) { var off=$(".t").offset(); //当前DIV离浏览器边框四边的距离 var of=off.top-160; //DIV离顶部的距离-本身DIV高度加顶部DIV高度的总高 $(window).scroll(function() { var scr=$(window).scrollTop(); //获取滚动条Y轴距离 if(scr>of) { $(".t").css("position","fixed"); $(".t").css("top","80px"); //根据需要调整 $(".t").css("background-color","#906"); //根据需要调整 $(".t").css("left","275px"); //根据需要调整 $(".t").css("width","800px"); //根据需要调整 $(".t").css("height","60px"); //根据需要调整 } if(scr<of) { $(".t").css("position","absolute"); $(".t").css("top","230px"); //根据需要调整 $(".t").css("background-color","#F00"); //根据需要调整 $(".t").css("left","180px"); //根据需要调整 $(".t").css("width","990px"); //根据需要调整 $(".t").css("height","80px"); //根据需要调整 } }) }); </script>