var imgArray = new Array("images/70_2_blue.jpg", "images/bullock_orange.jpg", "images/crow_orange.jpg", "images/crow_stripes.jpg", "images/mihome_bed.jpg", "images/mihome_kitchen.jpg", "images/mihome_wall.jpg", "images/pantera_open_red.jpg", "images/pantera2_purple.jpg", "images/pantera2_yellow.jpg","images/red_pie.jpg");
var imgArrayLength = imgArray.length;
var randomNbr = Math.round((imgArrayLength-1) * Math.random());
var randomNbr2 = Math.round((imgArrayLength-1) * Math.random());

//make sure random number two different than random number one
while (randomNbr2 == randomNbr)
{
    randomNbr2 = Math.round((imgArrayLength-1) * Math.random());
}

document.imgRandom1.src = imgArray[randomNbr];  
document.imgRandom2.src = imgArray[randomNbr2];