function output_random_image(){
 var myimages=new Array()
 myimages[1]="/templates/images/header1.jpg"
 myimages[2]="/templates/images/header2.jpg"
 myimages[3]="/templates/images/header3.jpg"
 myimages[4]="/templates/images/header4.jpg"
 myimages[5]="/templates/images/header5.jpg"
 myimages[6]="/templates/images/header5.jpg"

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

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