function formHandler(){
var URL = document.form.site.options[document.form.site.selectedIndex].value;
window.location.href = URL;
}

document.write('<form name="form">');
document.write('<select name="site" size=1>');
document.write('<option value="">alphabetical index');
document.write('<option value="Content/A/index.html">a');
document.write('<option value="Content/B/index.html">b');
document.write('<option value="Content/C/index.html">c');
document.write('<option value="Content/D/index.html">d');
document.write('<option value="Content/E/index.html">e');
document.write('<option value="Content/F/index.html">f');
document.write('<option value="Content/G/index.html">g');
document.write('<option value="Content/H/index.html">h');
document.write('<option value="Content/I/index.html">i');
document.write('<option value="Content/J/index.html">j');
document.write('<option value="Content/K/index.html">k');
document.write('<option value="Content/L/index.html">l');
document.write('<option value="Content/M/index.html">m');
document.write('<option value="Content/N/index.html">n');
document.write('<option value="Content/O/index.html">o');
document.write('<option value="Content/P/index.html">p');
document.write('<option value="Content/Q/index.html">q');
document.write('<option value="Content/R/index.html">r');
document.write('<option value="Content/S/index.html">s');
document.write('<option value="Content/T/index.html">t');
document.write('<option value="Content/U/index.html">u');
document.write('<option value="Content/V/index.html">v');
document.write('<option value="Content/W/index.html">w');
document.write('<option value="Content/X/index.html">x');
document.write('<option value="Content/Y/index.html">y');
document.write('<option value="Content/Z/index.html">z');
document.write('</select>');
document.write('<input type=button value="Go!" onClick="javascript:formHandler()">');
document.write('</form>');