Chữ chạy theo chuột

<style type="text/css">
/* Circle Text Styles */
#outerCircleText {
/* Optional - DO NOT SET FONT-SIZE HERE, SET IT IN THE SCRIPT */
font-style: Times New Roman;
font-weight: bold;
font-family: 'comic sans ms', verdana, times new roman;
color: RED;
/* End Optional */
/* Start Required - Do Not Edit */
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;}
/* End Required */
/* End Circle Text Styles */</style>
<p>
 Dòng chữ chạy theo chuột<script type="text/javascript">
/* Circling text trail- Tim Tilton
 Website: http://www.ngocmnhweb.com/
 Visit: http://www.ngocmanhweb.com/ for Original Source and tons of scripts
 Modified Here for more flexibility and modern browser support
 Modifications as first seen in http://www.dynamicdrive.com/forums/
 username:jscheuer1 - This notice must remain for legal use
 */
;(function(){
// Your message here (QUOTED STRING)
var msg = "Dòng chữ chạy theo chuột";
/* THE REST OF THE EDITABLE VALUES BELOW ARE ALL UNQUOTED NUMBERS */
// Set font's style size for calculating dimensions
// Set to number of desired pixels font size (decimal and negative numbers not allowed)
var size = 30;
// Set both to 1 for plain circle, set one of them to 2 for oval
// Other numbers & decimals can have interesting effects, keep these low (0 to 3)
var circleY = 0.75; var circleX = 2;
// The larger this divisor, the smaller the spaces between letters
// (decimals allowed, not negative numbers)
var letter_spacing = 5;
// The larger this multiplier, the bigger the circle/oval
// (decimals allowed, not negative numbers, some rounding is applied)
var diameter = 10;
// Rotation speed, set it negative if you want it to spin clockwise (decimals allowed)
var rotation = 0.4;
// This is not the rotation speed, its the reaction speed, keep low!
// Set this to 1 or a decimal less than one (decimals allowed, not negative numbers)
var speed = 0.3;
////////////////////// Stop Editing //////////////////////
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; // y-position
 xmouse = !isNaN(e.pageX)? e.pageX : e.clientX; // x-position
},
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){ // makes the circle
 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(){ // makes the resistance
 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(){ // appends message divs, & sets initial values for positioning arrays
 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></p>

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