How to: Make bubbles when the mouse move

• 
  Right click on the above image, choose “Save Target As…” and save into a folder called jbubble.

• Upload the files to your web directory.

<script type="text/javascript">
// Under Water Mouse - Kurt Grigg -
// http://www.btinternet.com/~kurt.grigg/javascript

n4=(document.layers);
n6=(document.getElementById&&!document.all);
ie=(document.all);
o6=(navigator.appName.indexOf("Opera") != -1)?true:false;

img0=new Image();
img0.src="bluebub.gif";

num=(n6)?10:15;

buby=0;
bubx=0;
if (n4||n6){
window.captureEvents(Event.MOUSEMOVE);
function mouse1(e){
 buby = e.pageY-20-window.pageYOffset;
 bubx = e.pageX-4;
 }
if (n4) window.onMouseMove=mouse1;
else document.onmousemove=mouse1;
}
if (ie||o6){
 function mouse2(){
 buby = (ie)?event.clientY-20:event.clientY-20-window.pageYOffset;
 bubx = event.clientX-4;
 }
document.onmousemove=mouse2;
}
yp=new Array();
xp=new Array();
sp=new Array();
rt=new Array();
gr=new Array();
s1=new Array();
s2=new Array();
nz=new Array();
wh=(ie)?window.document.body.clientHeight:window.innerHeight;
for (i=0; i < num; i++){
 yp[i]=Math.random()*wh-buby;
 xp[i]=bubx;
 sp[i]= 6+Math.random()*3;
 s1[i]=0;
 s2[i]=Math.random()*0.1+0.05;
 gr[i]=4;
 nz[i]=Math.random()*15+5;
 rt[i]=Math.random()*0.5+0.1;
}
if (n4){
 for (i=0; i < num; i++){
 document.write(”<LAYER NAME=’bub”+i+”‘ LEFT=0 TOP=-50>”
+”<img src=’bluebub.gif’ width=”+nz[i]+” height=”+nz[i]+”></LAYER>”);
 }
}
if (ie){
document.write(’<div style=”position:absolute;top:0px;left:0px”><div style=”position:relative”>’);
 for (i=0; i < num; i++){
 document.write(’<img id=”bub’+i+’” src=”‘+img0.src+’” style=”position:absolute;top:-50px;left:0px”>’);
 }
 document.write(’</div></div>’);
}
if (n6||o6){
 for (i=0; i < num; i++){
 document.write(”<div id=’bub”+i+”‘ style=’position:absolute;top:-50px;left:0px’>”
+”<img src=”+img0.src+” width=”+nz[i]+” height=”+nz[i]+”></div>”);
 }
}
function MouseBubbles(){
scy=(document.all)?document.body.scrollTop:window.pageYOffset;
scx=(document.all)?document.body.scrollLeft:window.pageXOffset;
for (i=0; i < num; i++){
sy = sp[i]*Math.sin(270*Math.PI/180);
sx = sp[i]*Math.cos(s1[i]*5);
yp[i]+=sy;
xp[i]+=sx;
if (yp[i] < -40){
 yp[i]=buby;
 xp[i]=bubx;
 sp[i]= 6+Math.random()*3;
 gr[i]=4;
 nz[i]=Math.random()*15+5;
}
if (n4){
 document.layers["bub"+i].left=xp[i]+scx;
 document.layers["bub"+i].top=yp[i]+scy;
}
if (ie){
 document.getElementById(”bub”+i).style.left=xp[i]+scx;
 document.getElementById(”bub”+i).style.top=yp[i]+scy;
 document.getElementById(”bub”+i).style.width=gr[i];
 document.getElementById(”bub”+i).style.height=gr[i];
}
if (n6||o6){
 document.getElementById(”bub”+i).style.left=xp[i]+scx;
 document.getElementById(”bub”+i).style.top=yp[i]+scy;
}
gr[i]+=rt[i];
s1[i]+=s2[i];
if (gr[i] > 14) gr[i]=15;
}
setTimeout(’MouseBubbles()’,10);
}
MouseBubbles();
</script>

• Open your HTML file and insert the above code before </head> tag.
• Save the file and your done!