4 <select id=
"test" size=
"8">
7 var optgroup
= document
.createElement("optgroup");
8 optgroup
.setAttribute('label', 'An optgroup');
9 var option
= document
.createElement("option");
10 var optionText
= document
.createTextNode("An option");
11 option
.appendChild(optionText
);
12 var select
= document
.getElementById("test");
14 optgroup
.appendChild(option
);
15 select
.appendChild(optgroup
);