var zone="kids/stacks/books";
var sz= "728x90";
var width = "728";
var height = "90";
var pos= "1";
var age= "";
var grade= "";
var subj= "";
var reg= "";
var aud= "";
var login = "";

dctile = dctile + 1;

document.write('<SCR'+'IPT LANGUAGE="JavaScript1.1" SRC="http://ad.doubleclick.net/adj/scholastic.tmus/' + zone + ';dcopt=ist;tile=' + dctile + ';pos=' + pos + ';age=' + age + ';grade=' + grade + ';subj=' + subj + ';reg=' + reg + ';aud=' + aud + ';login=' + login + ';sz=' + sz + ';ord=' + ord + '?" ><\/SCR'+'IPT>');

if ((!document.images && navigator.userAgent.indexOf("Mozilla/2.") >= 0)  || navigator.userAgent.indexOf("WebTV")>= 0) {
document.write('<A HREF="http://ad.doubleclick.net/jump/scholastic.tmus/' + zone + ';tile=' + dctile + ';pos=' + pos + ';age=' + age + ';grade=' + grade + ';subj=' + subj + ';reg=' + reg + ';aud=' + aud + ';login=' + login + ';sz=' + sz + ';ord=' + ord + '?"  TARGET="_blank">');
document.write('<IMG SRC="http://ad.doubleclick.net/ad/scholastic.tmus/' + zone + ';tile=' + dctile + ';pos=' + pos + ';age=' + age + ';grade=' + grade + ';subj=' + subj + ';reg=' + reg + 'aud=' + aud + ';login=' + login + ';sz=' + sz + ';ord=' + ord + '?" WIDTH="' + width + '" HEIGHT="' + height + '" BORDER="0" ALT=""></A>');
}