function rand_number(n)
{
var x;
x=Math.round(Math.random()*100);
x%=n;
return x;
}
function flash()
{
var fla = new Array();
fla[0]='<EMBED src="abri.swf" quality=high WIDTH=100% HEIGHT=92%>';
fla[1]='<EMBED src="abris.swf" quality=high WIDTH=100% HEIGHT=92%>';
fla[2]='<EMBED src="ab.swf" quality=high WIDTH=100% HEIGHT=92%>';
fla[3]='<EMBED src="a.swf" quality=high WIDTH=100% HEIGHT=92%>';
var n=rand_number(4); 
document.write(fla[n]);
}