document.writeln("<script type=\"text\/javascript\">");
document.writeln("function fetch_object(idname)");
document.writeln("{");
document.writeln(" var my_obj = document.getElementById(idname);");
document.writeln(" return my_obj;");
document.writeln("}");
document.writeln("function toggle_nav(obj)");
document.writeln("{");
document.writeln(" for (i = 1; i<= 6; i++ )");
document.writeln(" {");
document.writeln("  var sub_nav = fetch_object(\"lower_nav\" + i);");
document.writeln("  var sub_nav_index = fetch_object(\"lower_nav0\");");
document.writeln("  sub_nav_index.style.display = \"none\";");
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document.writeln("  {");
document.writeln("   sub_nav.style.display = \"block\";");
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document.writeln("  else");
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document.writeln("   sub_nav.style.display = \"none\";");
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document.writeln(" }");
document.writeln("}");
document.writeln("<\/script>")