<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;  
}