function random_imglink_level3(){
var myimages=new Array()
//specify random images below. You can have as many as you wish
myimages[1]="../images/ortho_banner.jpg"
myimages[2]="../images/ortho_banner2.jpg"
myimages[3]="../images/ortho_banner3.jpg"
myimages[4]="../images/ortho_banner4.jpg"
myimages[5]="../images/ortho_banner5.jpg"
myimages[6]="../images/ortho_banner6.jpg"
myimages[7]="../images/ortho_banner7.jpg"
myimages[8]="../images/ortho_banner8.jpg"

//specify corresponding links below
var imagelinks=new Array()
imagelinks[1]="../default.htm"
imagelinks[2]="../default.htm"
imagelinks[3]="../default.htm"
imagelinks[4]="../default.htm"
imagelinks[5]="../default.htm"
imagelinks[6]="../default.htm"
imagelinks[7]="../default.htm"
imagelinks[8]="../default.htm"

var ry=Math.floor(Math.random()*myimages.length)
if (ry==0)
ry=1
document.write('<a href='+'"'+imagelinks[ry]+'"'+'><img src="'+myimages[ry]+'" width="721" height="202" border="0" class="left"></a>')
}