function random_left(){
var mycontent=new Array()
//specify random content below.
mycontent[1]='<img src=images/duties4-150-f.gif>'
mycontent[2]='<img src=images/duties2-150-f.gif'
mycontent[3]='<img src=images/duties1-150-f.gif>'
mycontent[4]='<img src=images/duties5-150-f.gif>'
mycontent[5]='<img src=images/txt-to-ensure-f.gif>'
mycontent[6]='<img src=images/txt-to-uphold-f.gif>'


var ry=Math.floor(Math.random()*mycontent.length)
if (ry==0)
ry=1
document.write(mycontent[ry])
}
random_left()