renderer.enabled at random, how?

How would you turn this script into random script. Renderer needs to be enable only for 0.5 Seconds and then disable.

renderer.enabled = (Time.time % 2 > 1); // This script turns renderer on for 1 second and turns off for 1 second (Mimics Flashing).

Imagine lightning flash.

var RandomLigtning : int;

function Update ()
{
RandomLigtning = Random.Range(0,10000)

if (RandomLigtning == 1)
{
renderer.enabled = (Time.time % 2 > 1); // This script turns renderer on for 1 second //and turns off for 1 second (Mimics Flashing).
}
}