function banner(img_source,url,alt,chance) {
this.img_source = img_source;
this.url = url;
this.alt = alt;
this.chance = chance;
}
function display() {
with (this) document.write("
");
}
banner.prototype.display = display;
banners = new Array();
banners[0] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/1.jpg",
"",
"",
10);
banners[1] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/2.jpg",
"",
"",
10);
banners[2] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/3.jpg",
"",
"",
10);
banners[3] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/4.jpg",
"",
"",
10);
banners[4] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/5.jpg",
"",
"",
10);
banners[5] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/6.jpg",
"",
"",
10);
banners[6] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/7.jpg",
"",
"",
10);
banners[7] = new banner("http://www.poolweb.com/site/ATI_Front_Page_B/8.jpg",
"",
"",
10);
sum_of_all_chances = 0;
for (i = 0; i < banners.length; i++) {
sum_of_all_chances += banners[i].chance;
}
function display_banner() {
chance_limit = 0;
randomly_selected_chance = Math.round((sum_of_all_chances - 1) * Math.random()) + 1;
for (i = 0; i < banners.length; i++) {
chance_limit += banners[i].chance;
if (randomly_selected_chance <= chance_limit) {
document.write("
");
return banners[i];
break;
}
}
}
//-->