// JavaScript Document

function randomAdv5() {
  m = 0, x = 0, y = 0;
  ad  = new Array();
  adv = new Array();
  hit = new Array();

  hit[0] = 1; adv[0] = '<a href="http://www.kyunavi.com/" target="_blank"><IMG alt="九なび" border="0" src="http://www.takuhai.co.jp/afi/img/move.gif"></a>';


for(i=0; i<=hit.length - 1; i++) {
    m += hit[i];
  }
  n = Math.floor(Math.random() * m);
  n++;
  for(i=0; i<=hit.length - 1; i++) {
    x = y;
    y += hit[i];
    if(x<n && n<=y) ad = adv[i];
  }
  document.write(ad);
}