img = new Array();
img[0] = "http://brisa.up.seesaa.net/char/brisa.jpg";
img[1] = "http://brisa.up.seesaa.net/char/lluvia.jpg";
img[2] = "http://brisa.up.seesaa.net/char/fuego.jpg";
img[3] = "http://brisa.up.seesaa.net/char/sol.jpg";
img[4] = "http://brisa.up.seesaa.net/char/hielo.jpg";
img[5] = "http://brisa.up.seesaa.net/char/tifon.jpg";
img[6] = "http://brisa.up.seesaa.net/char/Nieve.jpg";
img[7] = "http://brisa.up.seesaa.net/char/Luz.jpg";
img[8] = "http://brisa.up.seesaa.net/char/Roca.jpg";
img[9] = "http://brisa.up.seesaa.net/char/Mar.jpg";
img[10] = "http://brisa.up.seesaa.net/char/Aire.jpg";
img[11] = "http://brisa.up.seesaa.net/char/Ola.jpg";
img[12] = "http://brisa.up.seesaa.net/char/Cielo.jpg";

function setBanner(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<img src='" + img[No] + "' border='0'>");
}