function cube_rt(x) { return Math.pow(x,1/3); }
function area(x) { return (Math.PI * Math.pow(x,2)); }
function diameter(x) { return (x * 2); }
function circumference(x) { return (2 * (Math.PI * x)); }
function volume(x) { return (Math.PI * Math.pow(x,3)); }
function power(x,y) { return (Math.pow(x,y)); }
function round_up(x) { return (Math.ceil(x)); }
function round_dn(x) { return (Math.floor(x)); }
function round_me(x) { return (Math.round(x)); }
function sqare_rt(x) { return (Math.sqrt(x)); }
function random(x) { return (Math.random(x)); }
function absolute(x) { return (Math.abs(x)); }
function isJava() { return (navigator.javaEnabled()); }
function whatSys() { return (navigator.platform); }