A jquery with a microblog button returns the top effect code

 For the JQUERY code part, copy the code before</head>. <script src=" http://libs.baidu.com/jquery/1.7.1/jquery.min.js " type="text/ javascript "></script> <script type="text/javascript"> //scrolltotop $(function(){ //First hide # back to top $("#totop").hide(); //When the scroll bar is less than 100 pixels from the top, the jump link appears, otherwise it disappears $(function () { $(window).scroll(function(){ if ($(window).scrollTop()>100){ $("#totop").fadeIn(); } else { $("#totop").fadeOut(); } }); //After clicking the jump link, return to the top of the page $("#totop").click(function(){ $('body,html').animate({scrollTop:0},500); return false; }); }); });  </script>

 The CSS part is copied to the CSS style of your website. #share {position:fixed;_position:absolute;_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight)-34+"px"); bottom:34px;left:95%;width:30px;zoom:1;} #share a{background-image:url(images/share.png);  background-repeat:no-repeat; display:block; width:30px; height:30px; margin-bottom:2px; overflow:hidden; text-indent:-999px;-webkit-transition: all 0.2s ease-in-out;-moz-transition: all 0.2s ease-in-out;-o-transition: all 0.2s ease-in-out;-ms-transition: all 0.2s ease-in-out;transition: all 0.2s ease-in-out;} #share a{} #share .sina {background-position:0 0;  position:absolute; bottom:32px;} #share a.sina:hover { background-position:-30px 0;} #share .tencent { background-position:0 -30px;  position:absolute; bottom:0;} #share a.tencent:hover { background-position:-30px -30px;} #share a#totop{background-position:0 -120px; position:absolute;bottom:64px;cursor:pointer;} #share a#totop:hover {background-position:-30px -120px;}

 The html code is copied to the</body>code after modification. <div id="share"> <a id="totop" title="">Return to the top</a> <a href=" http://t.qq.com/lanyesorg "Target=" _blank "class=" sina ">Follow Blueleaf Sina Weibo</a> <a href=" http://t.qq.com/lanyesorg "Target=" _blank "class=" tencent ">Follow Tencent Weibo</a> </div>