// banner aleatorios
var host = "http://www.thinkbis.com/";
var banners = 1;
var ahora = new Date()
var segundos = ahora.getSeconds()
var ad = segundos % banners;
ad +=1;

if (ad==1) {
flash=""+ host +"imagenes/flash/banner4.swf"
width="545";
height="187";
}

var so = new SWFObject(" "+ flash +" ", "movie", " "+ width +" ", " "+ height +" ", "false", "#ffffff");
so.addParam("wmode", "transparent");
so.addParam("menu", "false");
so.addParam("scale", "noscale");
so.addParam("quality", "high");
so.write("banners");