// JavaScript Document
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("<A HREF=" + url + "><IMG SRC='" + img_source + "' BORDER=0 ALT='" + alt + "'></A>");
}
banner.prototype.display = display;
banners = new Array();
banners[0] = new banner("/_img/sponsorlogos/otto.gif",
                        "/sponsors/default.asp#otto",
                        "Otto Bock - Quality for life",
                        10);
banners[1] = new banner("/_img/sponsorlogos/orion.gif",
                        "/sponsors/default.asp#orion",
                        "OrionHealth - Rehabilitation and Assessment Centres",
                        10);
banners[2] = new banner("/_img/sponsorlogos/cbi.gif",
                        "/sponsors/default.asp#cbi",
                        "CBI Health", 
                        10);
banners[3] = new banner("/_img/sponsorlogos/ClassicCaregivers.gif",
                        "/sponsors/default.asp#class",
                        "Classic Caregivers", 
                        10);
banners[4] = new banner("/_img/sponsorlogos/back_in_motion.gif",
                        "/sponsors/default.asp#backinmotion",
                        "Back in Motion", 
                        10);
banners[5] = new banner("/_img/sponsorlogos/probed.gif",
                        "/sponsors/default.asp#probed",
                        "ProBed Medical Technologies", 
                        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("<A HREF=" + banners[i].url + "><IMG SRC='" + banners[i].img_source + "'  BORDER=0 ALT='" + banners[i].alt + "'></A>");
         return banners[i];
         break;
      }
   }
}
//-->