function rand(n){
 var now = new Date();
 var seed = now.getTime() % 0xffffffff;
 seed = (0x015a4e35 * seed) % 0x7fffffff;
 return (seed >> 16) % n;
}

 <!--
 // The Central Randomizer 1.3 (C) 1997 by Paul Houle (houle@msc.cornell.edu)
 // See:  http://www.msc.cornell.edu/~houle/javascript/randomizer.html

function rnd() {
	  rnd.today=new Date();
	 rnd.seed=rnd.today.getTime();


         rnd.seed = (rnd.seed*9301+49297) % 233280;
         return rnd.seed/(233280.0);
 };

 function rand(number) {
         return Math.ceil(rnd()*number);
 };

 // end central randomizer. -->