// JavaScript Document

var nbimage= 40;
    var width;
    var height;
    var url;
    var alte;
    function banner()
    {
    numimage= Math.round(Math.random()*(nbimage-1)+1);
    if (numimage <= 10)
    {
    gotosite = "";
    url = "images/banner_air_03.jpg";
    alte = "banner air";
    }
    if (numimage > 10 && numimage <= 20)
    {
    gotosite = "";
    url = "images/banner_eau_03.jpg";
    alte = "banner eau";
    }
    if (numimage > 20 && numimage <= 30)
    {
    gotosite = "";
    url = "images/banner_feu_03.jpg";
    alte = "banner fire";
    }
    if (numimage > 30)
    {
    gotosite = "";
    url = "images/banner_terre02_03.jpg";
    alte = "banner terre";
    }
    if(gotosite != "")
    {
    document.write ('<A HREF="' + gotosite + '">'); 
    }
    document.write('<IMG SRC="' + url + '" ALT="' + alte + '" BORDER=0>')
    if(gotosite != "")
    {
    document.write('<\/A>')
    }
    }