//
// www.multizona.com
// MultiZona.com (c) 2007
//
// RANDOM ENCABEZADO
function banner(imgSource,chance) {
this.imgSource = imgSource;
this.chance = chance;
}
function dispBanner() {
with (this) document.write("<td background='" + imgSource + "'>");

}
banner.prototype.dispBanner = dispBanner;
banners = new Array();
banners[0] = new banner("/images/enc/back1.jpg",
                        33);
banners[1] = new banner("/images/enc/back2.jpg",
                        33);
banners[2] = new banner("/images/enc/back3.jpg",
                        34);
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("<td background='" + banners[i].imgSource + "'>");
return banners[i];
break;
      }
   }
}


// PRINT
		function print_window() 
		   { 
				window.print();
	       }
//-->