var totallinks=3

var ad=new Array(totallinks)

ad[0]="<img src=../bullet.gif width=7 height=14><a href=http://www.birthdayshirts.com target=_blank>Birthday Shirts</a>"

ad[1]="<img src=../bullet.gif width=7 height=14><a href=http://www.goodbirthdayideas.com target=_blank>Birthday Ideas</a>"

ad[2]="<img src=../bullet.gif width=7 height=14><a href=http://www.birthdaymessages.com/graphics/index.htm>Free Birthday Graphics</a>"

var randomnumber=Math.floor(Math.random()*totallinks)

var cont=ad[randomnumber]
document.write(cont)