if ( document.getElementById ) {
  pub_offset_x = 0;
  pub_offset_y = 0;
  pub_hauteur  = 0;
  pub_surface = 0;
  pub_x  = 1;
  pub_y  = 1;
}

function make_random() {
  num_random = Math.round(Math.random() * 4);
  num_random++;
  return(num_random);
}

function start_pub() {
  if ( document.all ) {
    lar_ecran = document.body.clientWidth  - 265;
    hau_ecran = document.body.clientHeight - 235;
  } else {
    lar_ecran = window.innerWidth  - 265;
    hau_ecran = window.innerHeight - 235;
  }

  if ( document.getElementById ) {
    if ( pub_surface > lar_ecran    ) { pub_x = ( -(make_random()) ); }
    if ( pub_surface < pub_offset_x ) { pub_x = make_random(); }
    document.getElementById("pub_layer").style.left = ( pub_surface = pub_surface + pub_x ) + "px";
    document.getElementById("pub_layer").style.top  = ( pub_hauteur += pub_y ) + pub_offset_y + "px";
    if ( pub_hauteur > hau_ecran ) { pub_y = ( -(make_random()) ); }
    if ( pub_hauteur < 0         ) { pub_y = make_random(); }
    tempo = setTimeout('start_pub()', 50);
  }
}

function stop_pub() {
  clearTimeout(tempo);
}

function make_offset() {
  if ( navigator.appName == "Microsoft Internet Explorer" ) { pub_offset_y = document.body.scrollTop; }
}


document.write('<div id="pub_layer" onMouseOver="stop_pub();" onMouseOut="start_pub();" style="position:absolute; top:0px; left:0px; z-index:100;">');
document.write('<iframe src="http://stars.f5biz.biz/pub_volante/iframe.php?id=1285&id2=33523&langue=fr&star=2&clr=0&cible=1&popup=0&rebill=1&cf2=" width="260" height="230" marginwidth="0" marginheight="0" frameborder="0" allowtransparency="true"></iframe>');
document.write('</div>');

window.onload = start_pub;
onscroll      = make_offset;