var users_ar = ["Thermoking_App", "Ingersoll_App", "Fox_App", "FAA_App", "Hussman_App", "NASA_App"];
var ctr = Math.round((users_ar.length-1)*Math.random());
var howManySeconds = 3;

function showUsers()
{
	var usr_obj = document.getElementById("lnetusers");
	if (usr_obj)
	{
		usr_obj.src = "images/"+users_ar[ctr]+".png";
		if (ctr <= (users_ar.length-2))
			ctr++;
		else
			ctr = 0;

		setTimeout("showUsers()", howManySeconds*1000);
	}
}