var listB = new DynamicOptionList("B","A");

listB.addOptions("Popular music","Artist","Artist","Album title","Album title","Song title","Song title","Catalog number","Catalog number");
listB.addOptions("Classical music","Catalog number","Catalog number");

listB.setDefaultOption("Popular music","Catalog number");
listB.setDefaultOption("Classical music","Catalog number");

function init() {
	var theform = document.form1;
	listB.init(theform);
}