鼠标跟随代码，转动的文字_浏览器特效

<style type="text/css">font-style: italic;font-weight: bold;font-family: 'comic sans ms', verdana, arial;color: #000;position: absolute;top: 0;left: 0;z-index: 3000;cursor: default;}#outerCircleText div {position: relative;}#outerCircleText div div {position: absolute;top: 0;left: 0;text-align: center;}</style><script type="text/javascript">;(function(){var msg = "Www.mb5u.com  源 码 爱 好 者 、 一 个 有 质 量 源  码 站";var size = 23;var circleY = 0.75; var circleX = 2;var letter_spacing = 5;var diameter = 10;var rotation = 0.4;var speed = 0.3;if (!window.addEventListener && !window.attachEvent || !document.createElement) return;msg = msg.split('');var n = msg.length - 1, a = Math.round(size * diameter * 0.208333), currStep = 20,ymouse = a * circleY + 20, xmouse = a * circleX + 20, y = [], x = [], Y = [], X = [],o = document.createElement('div'), oi = document.createElement('div'),b = document.compatMode && document.compatMode != "BackCompat"? document.documentElement : document.body,mouse = function(e){ e = e || window.event; ymouse = !isNaN(e.pageY)? e.pageY : e.clientY; xmouse = !isNaN(e.pageX)? e.pageX : e.clientX;},makecircle = function(){ // rotation/positioning if(init.nopy){  o.style.top = (b || document.body).scrollTop + 'px';  o.style.left = (b || document.body).scrollLeft + 'px'; }; currStep -= rotation; for (var d, i = n; i > -1; --i){  d = document.getElementById('iemsg' + i).style;  d.top = Math.round(y[i] + a * Math.sin((currStep + i) / letter_spacing) * circleY - 15) + 'px';  d.left = Math.round(x[i] + a * Math.cos((currStep + i) / letter_spacing) * circleX) + 'px'; };},drag = function(){ y[0] = Y[0] += (ymouse - Y[0]) * speed; x[0] = X[0] += (xmouse - 20 - X[0]) * speed; for (var i = n; i > 0; --i){  y[i] = Y[i] += (y[i-1] - Y[i]) * speed;  x[i] = X[i] += (x[i-1] - X[i]) * speed; }; makecircle();},init = function(){ if(!isNaN(window.pageYOffset)){  ymouse += window.pageYOffset;  xmouse += window.pageXOffset; } else init.nopy = true; for (var d, i = n; i > -1; --i){  d = document.createElement('div'); d.id = 'iemsg' + i;  d.style.height = d.style.width = a + 'px';  d.appendChild(document.createTextNode(msg[i]));  oi.appendChild(d); y[i] = x[i] = Y[i] = X[i] = 0; }; o.appendChild(oi); document.body.appendChild(o); setInterval(drag, 25);},ascroll = function(){ ymouse += window.pageYOffset; xmouse += window.pageXOffset; window.removeEventListener('scroll', ascroll, false);};o.id = 'outerCircleText'; o.style.fontSize = size + 'px';if (window.addEventListener){ window.addEventListener('load', init, false); document.addEventListener('mouseover', mouse, false); document.addEventListener('mousemove', mouse, false);  if (/Apple/.test(navigator.vendor))   window.addEventListener('scroll', ascroll, false);}else if (window.attachEvent){ window.attachEvent('onload', init); document.attachEvent('onmousemove', mouse);};})();</script>