function random_imglink(){

var myimages=new Array()

myimages[1]="http://ws4.y-bbs.net/"

var imagelinks=new Array()

imagelinks[1]="http://ws4.y-bbs.net/"

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

if (ry==0)

ry=1

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

}

random_imglink()