var vURL = "http://hcmc.businesscatalyst.com/"

// new code 

function random_imglink(){
  var myimages=new Array()

  myimages[1]= vURL + "images/headimg_1.jpg"
  myimages[2]= vURL + "images/headimg_2.jpg"
  myimages[3]= vURL + "images/headimg_3.jpg"
  myimages[4]= vURL + "images/headimg_4.jpg"
  myimages[5]= vURL + "images/headimg_5.jpg"
  myimages[6]= vURL + "images/headimg_6.jpg"  
  myimages[7]= vURL + "images/headimg_7.jpg"  

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

  if (ry==0)
     ry=1
     document.write('<img src="'+myimages[ry]+'" width=580 height=85 border=0>')
}