var image1 = new Image();
image1.src = "rnd1.gif";
var image2 = new Image();
image2.src = "rnd2.gif";
var news1 = new Image();
news1.src = "new01_1.gif";
var news2 = new Image();
news2.src = "new01_2.gif";

function check()
{
var img_name = new Array("rnd1.gif", "rnd2.gif");

var l = img_name.length;

var rnd_no = Math.round((l-1)*Math.random());

var news_name = new Array("new01_1.gif", "new01_2.gif");

document.r_img.src = img_name[rnd_no];
document.r_news.src = news_name[rnd_no];
}

function check2()
{
var img_name = new Array("rnd1.gif", "rnd2.gif");

var l = img_name.length;

var rnd_no = Math.round((l-1)*Math.random());

document.r_img.src = img_name[rnd_no];
}