arr2 = new Array(
["http://www.petsandfriendsjv.com/images/homepage_ads/rotator2/eukanuba_adultlargebreed.jpg","http://www.petsandfriendsjv.com/dog_food_eukaunba_adult_largebreed.asp","Eukanuba Adult Large Breed"],
["http://www.petsandfriendsjv.com/images/homepage_ads/rotator2/exclusive_largebreed_chickenrice.jpg","http://www.petsandfriendsjv.com/dog_food_exclusive_adult_largebreed_chickenrice.asp","Exclusive™ Chicken & Rice Large Breed Adult"],
["http://www.petsandfriendsjv.com/images/homepage_ads/rotator2/purina_kitnkaboodle.jpg","http://www.petsandfriendsjv.com/cat_food_purina_kit_n_kaboodle.asp","Purina Kit N Kaboodle"], 
["http://www.petsandfriendsjv.com/images/homepage_ads/rotator2/royalcanin_yorkshire.jpg","http://www.petsandfriendsjv.com/dog_food_royalcanin_yorkshire_28.asp","Royal Canin Mini Breed Yorkshire Dog (28)"]
// no comma at the end of last index 
);
var lastImg="0"; 

function changeimg2()
{   var randNum = getRand();  
document.getElementById("img2").src = arr2[randNum][0]; 
document.getElementById("link2").href = arr2[randNum][1]; 
document.getElementById("img2").title = arr2[randNum][2]; 
setTimeout('changeimg2()',15000);  }  
function getRand () {   var rnum;   
var id=Math.round(Math.random()*(arr2.length-1));   
rnum = id;   if (rnum==lastImg) { rnum = getRand(); }   
lastImg=rnum;   return rnum;  }