var how_many_js = 4;

var now = new Date()

var sec = now.getSeconds()

var js1 = sec % how_many_js;

js1 +=1;
//js1=3;
if (js1==1) {

url="http://www.smarttelematics.com/incl/pd1.txt";

}

if (js1==2) {

url="http://www.smarttelematics.com/incl/pd2.txt";

}

if (js1==3) {

url="http://www.smarttelematics.com/incl/pd3.txt";

}

if (js1==4) {

url="http://www.smarttelematics.com/incl/pd4.txt";

}


//document.write(js1);document.write(url);
document.write("<script type='text/javascript' src='" + url + "'></SCRIPT>");