function jump(form){
  jumpurl = form.selectedIndex;
  if(form[jumpurl].value != '0'){
    parent.location.href = form[jumpurl].value;
    form.selectedIndex = '0';
  }
  else{
    form.selectedIndex = '0';
  }
}

document.write("<SELECT name='open' onChange='jump(this);'>")
document.write("<OPTION selected value='0'>バックナンバー")
document.write("<OPTION value='0'>-----------------")
document.write("<OPTION value=")
document.write("'008_01_20.html'")
document.write(">・第20回モニター")
document.write("<OPTION value=")
document.write("'008_01_19.html'")
document.write(">・第19回モニター")
document.write("<OPTION value=")
document.write("'008_01_18.html'")
document.write(">・第18回モニター")
document.write("<OPTION value=")
document.write("'008_01_17.html'")
document.write(">・第17回モニター")
document.write("<OPTION value=")
document.write("'008_01_16.html'")
document.write(">・第16回モニター")
document.write("<OPTION value=")
document.write("'008_01_15.html'")
document.write(">・第15回モニター")
document.write("<OPTION value=")
document.write("'008_01_14.html'")
document.write(">・第14回モニター")
document.write("<OPTION value=")
document.write("'008_01_13.html'")
document.write(">・第13回モニター")
document.write("<OPTION value=")
document.write("'008_01_12.html'")
document.write(">・第12回モニター")
document.write("<OPTION value=")
document.write("'008_01_11.html'")
document.write(">・第11回モニター")
document.write("<OPTION value=")
document.write("'008_01_10.html'")
document.write(">・第10回モニター")
document.write("<OPTION value=")
document.write("'008_01_09.html'")
document.write(">・第9回モニター")
document.write("<OPTION value=")
document.write("'008_01_08.html'")
document.write(">・第8回モニター")
document.write("<OPTION value=")
document.write("'008_01_07.html'")
document.write(">・第7回モニター")
document.write("<OPTION value=")
document.write("'008_01_06.html'")
document.write(">・第6回モニター")
document.write("<OPTION value=")
document.write("'008_01_05.html'")
document.write(">・第5回モニター")
document.write("<OPTION value=")
document.write("'008_01_04.html'")
document.write(">・第4回モニター")
document.write("<OPTION value=")
document.write("'008_01_03.html'")
document.write(">・第3回モニター")
document.write("<OPTION value=")
document.write("'008_01_02.html'")
document.write(">・第2回モニター")
document.write("<OPTION value=")
document.write("'008_01_01.html'")
document.write(">・第1回モニター")
document.write("<OPTION value='0'>-----------------")
document.write("<OPTION value=")
document.write("'008_01.html'")
document.write(">・最新モニターへ")
document.write("<OPTION value='0'>-----------------")
document.write("</SELECT>")