myAds = [

"/ads/pioneerbank.html",
"/ads/hanska_furn.html",
"/ads/tommys.html",
"/ads/haala_ind.html",
"/ads/knakmuhs.html",
"/ads/continental_re.html",
"/ads/seba.html",
"/ads/dougs_tax.html",
"/ads/nilson.html",
"/ads/gibbon_l&h.html",
"/ads/leavenworth.html",
"/ads/candyman.html",
"/ads/sample2.html",

]

function randomAds(){
total=myAds.length-1 // range
numbersRange=new Array()
selectedNum=new Array()

for(var n=0;n<=total;n++){
numbersRange[n]=n
}

for(var p=0;p<3;p++){
rndnum=Math.floor(Math.random()*(total))
selectedNum[p]=numbersRange.splice(rndnum,1)
total--
}

for(var i=0;i<selectedNum.length;i++){
document.getElementById("if"+(i+1)).src=myAds[selectedNum[i]]
}

}