function random_imglink(){

  var myimages=new Array()
  myimages[1]="/images/banners/ent01.gif"
  myimages[2]="/images/banners/arc01.gif"
  myimages[3]="/images/banners/landis01.gif"
  myimages[4]="/images/banners/opm01.gif"
  myimages[5]="/images/banners/tfruit01.gif"
  myimages[6]="/images/banners/trevor01.gif"
  myimages[7]="/images/banners/ipm01.gif"
  myimages[8]="/images/banners/aquatic01.gif"
  myimages[9]="/images/banners/berryent01.gif"

  var imagelinks=new Array()
  imagelinks[1]="http://www.ent.msu.edu"
  imagelinks[2]="http://www.arc.ent.msu.edu"
  imagelinks[3]="http://www.landislab.ent.msu.edu"
  imagelinks[4]="http://www.opm.msu.edu"
  imagelinks[5]="http://www.treefruit.msu.edu"
  imagelinks[6]="http://www.maes.msu.edu/tnrc/index.html"
  imagelinks[7]="http://www.ipm.msu.edu"
  imagelinks[8]="https://www.msu.edu/user/merrittr/index.html"
  imagelinks[9]="http://www.isaacslab.ent.msu.edu/Home.html"

  var ry=Math.floor(Math.random()*myimages.length)

  if (ry==0)
     ry=1
     document.write('<a href='+'"'+imagelinks[ry]+'"'+'><img src="'+myimages[ry]+'" border=0></a>')
}

 random_imglink()