var how_many_js = 5;
var now = new Date()
var sec = now.getSeconds()
var js1 = sec % how_many_js;
js1 +=1;
if (js1==1) {
url="http://www.prom-dress-now.com/include/pd1.txt";
}
if (js1==2) {
url="http://www.prom-dress-now.com/include/pd2.txt";
}
if (js1==3) {
url="http://www.prom-dress-now.com/include/pd3.txt";
}
if (js1==4) {
url="http://www.prom-dress-now.com/include/pd4.txt";
}
if (js1==5) {
url="http://www.prom-dress-now.com/include/pd5.txt";
}
document.write("<script type='text/javascript' src='" + url + "'></SCRIPT>");