Ah to heck with it. Here's an example HTML with all the code.
<html>
<head>
<meta name="GENERATOR" content="Microsoft FrontPage 9.5 Beta">
</head>
<body>
<script>
/*
EarthQuake script- © Dynamic Drive (www.dynamicdrive.com)
For full source code, installation instructions, 100's more DHTML scripts, and Terms Of Use,
Visit http://dynamicdrive.com
*/
//configure the likelihood that an earthquake will occur (100% means always)
var chance_of_occurence="50%"
/////do NOT edit below this line/////////////
//variable used to store the equivalency of the 10 rector scales (in the form of 1, 3, 6...etc)
var rectorscale=new Array(1,3,6,9,12,15,18,21,24,27)
chance_of_occurence=parseInt(chance_of_occurence)
function earthquake(){
//randomly assign a number from 1 to 10 to variable rectorindex
rectorindex=Math.floor(Math.random()*10)
//randomly assign one of element rectorscale into variable rector
rector=rectorscale[rectorindex]
if ((document.all||document.layers)&&Math.floor(Math.random()*100)<=chance_of_occurence) {
//shake the browser's screen according to the random rector scale!
for (i=0;i,i<20;i++){
window.moveBy(0,rector)
window.moveBy(rector,0)
window.moveBy(0,-rector)
window.moveBy(-rector,0)
}
}
}
if (document.all)
document.write('<div id="quakenotice_ie"></div>')
</script>
<body onLoad="earthquake()">
</body>
</html>
Regards
cr3ative