鼠标事件（形成光圈环绕鼠标）

if (document.all) {
yourLogo = "可以运动的  比较有意思的 鼠标光圈js!  ";
logoFont = "黑体";
logoColor = "#FF33FF";
yourLogo = yourLogo.split('');
L = yourLogo.length;
TrigSplit = 360 / L;
Sz = new Array()
logoWidth = 100;
logoHeight = -30;
ypos = 0;
xpos = 0;
step = 0.03;
currStep = 0;
document.write('<div id="outer" style="position:absolute;top:0px;left:0px"><div style="position:relative">');
for (i = 0; i < L; i++) {
document.write('<div id="ie" style="position:absolute;top:0px;left:0px;'
+'width:10px;height:10px;font-family:'+logoFont+';font-size:12px;'
+'color:'+logoColor+';text-align:center">'+yourLogo[i]+'</div>');
}
document.write('</div></div>');
function Mouse() {
ypos = event.y;
xpos = event.x - 5;
}
document.onmousemove=Mouse;
function animateLogo() {
outer.style.pixelTop = document.body.scrollTop;
for (i = 0; i < L; i++) {
ie[i].style.top = ypos + logoHeight * Math.sin(currStep + i * TrigSplit * Math.PI / 180);
ie[i].style.left = xpos + logoWidth * Math.cos(currStep + i * TrigSplit * Math.PI / 180);
Sz[i] = ie[i].style.pixelTop - ypos;
if (Sz[i] < 5) Sz[i] = 5;
ie[i].style.fontSize = Sz[i] / 1.7;

}

currStep -= step;

setTimeout('animateLogo()', 20);
}

window.onload = animateLogo;

}