function addSmalltypeOptions(sel) {
	sel.options.add(new Option("手机","20937"));
	sel.options.add(new Option("数码相机","20928"));
	sel.options.add(new Option("数码摄像机","20912"));
	sel.options.add(new Option("笔记本","20807"));
	sel.options.add(new Option("CPU","20812"));
	sel.options.add(new Option("内存","20813"));
	sel.options.add(new Option("硬盘","20814"));
}