// All links must in in same folder
function writeHeaderHTML() {

document.writeln("<FORM NAME=activityNav>");
document.writeln("      <SELECT NAME='contents' onChange='javascript:goSelectedPage();return false;'>");
document.writeln("      	<OPTION  VALUE=''>--Choose a Section--");   
document.writeln("      	<OPTION  VALUE='intro'>Introduction");            
document.writeln("          <OPTION  VALUE='frames'>Begin the Activity");
document.writeln("          <OPTION  VALUE='explain'>The Study on Stereotypes and Memory");
document.writeln("      </SELECT>");
document.writeln("</FORM>");
}