function banner(imgSource,url,alt,chance) {
this.imgSource = imgSource;
this.url = url;
this.alt = alt;
this.chance = chance;
}
function dispBanner() {
with (this) document.write("<A HREF=" + url + " target='_top' lang='he' dir='rtl'><IMG SRC='" + imgSource + "' WIDTH=200 HEIGHT=55 BORDER=0 dir='rtl' lang='he' ALT='" + alt + "'></A>");
}
banner.prototype.dispBanner = dispBanner;
banners = new Array();
banners[0] = new banner("aomiaopatia.jpg",
"http://www.dr-zamir.co.il/news.php",
"הומיאופתיה......... לחצו כאן למידע נוסף",
                       5);
banners[1] = new banner("astma1.gif",
"http://www.dr-zamir.co.il/astma.php",
"מהפיכה בריפוי אסטמה - לחצו כאן לקבלת פרטים נוספים",
                        5);
banners[2] = new banner("astma2.gif",
"http://www.dr-zamir.co.il/astma.php",
"מהפיכה בריפוי אסטמה, לחצו כאן לקבלת פרטים נוספים",
                        5);
banners[3] = new banner("homeop.gif",
"http://www.dr-zamir.co.il/news.php",
"הומיאופתיה......... לחצו כאן למידע נוסף",
                        5);
banners[4] = new banner("astma1.gif",
"http://www.dr-zamir.co.il/astma.php",
"מהפיכה בריפוי אסטמה - לחצו כאן לקבלת פרטים נוספים",
                        5);
banners[5] = new banner("sault.gif",
"http://www.dr-zamir.co.il/post/1143363043-.html",
"ריפוי טבעי בחדרי מלח - עכשו גם בישראל",
                        5);


///////////////////////////////////////////
//  For frames ------- target='_blank'
//////////////////////////////////////////
// banners[x] = new banner(<banner source image>,                                           //                         <url to link to when the banner is clicked>,                     //                         <alt>                                                            //                         <the chance this banner has in which to be randomly selected>);  
// To increase the chance of a banner being randomly selected, increase it's corresponding  // 'chance' property relative to the other banners.      
///////////////////////////////////////////////////
sum_of_all_chances = 0;
for (i = 0; i < banners.length; i++) {
sum_of_all_chances += banners[i].chance;
}
function randomBanner() {
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 + " target='_top'><IMG SRC='http://www.dr-zamir.co.il/pix/banners/" + banners[i].imgSource + "' WIDTH=222 HEIGHT=43 BORDER=0 ALT='" + banners[i].alt + "'></A>");
return banners[i];
break;
      }
   }
}