<SCRIPT LANGUAGE="JavaScript">    
var no = 50;    
var speed = 1;    
var ns4up = (document.layers) ? 1 : 0;    
var ie4up = (document.all) ? 1 : 0;    
var s, x, y, sn, cs;    
var a, r, cx, cy;    
var i, doc_width = 800, doc_height = 600;    

if (ns4up) {    
doc_width = self.innerWidth;    
doc_height = self.innerHeight;    
}    
else    

if (ie4up) {    
doc_width = document.body.clientWidth;    
doc_height = document.body.clientHeight;    
}