jquery实现下拉框多选（支持IE7）

[{"title":"（ 6 个子文件 133KB ） jquery实现下拉框多选（支持IE7）","children":[{"title":"ComboBox","children":[{"title":"EasyUI","children":[{"title":"jquery.easyui.min.js <span style='color:#111;'> 409.63KB </span>","children":null,"spread":false},{"title":"images","children":[{"title":"combo_arrow.png <span style='color:#111;'> 117B </span>","children":null,"spread":false},{"title":"tree_icons.png <span style='color:#111;'> 3.04KB </span>","children":null,"spread":false}],"spread":true},{"title":"jquery.min.js <span style='color:#111;'> 93.71KB </span>","children":null,"spread":false},{"title":"easyui.css <span style='color:#111;'> 11.59KB </span>","children":null,"spread":false}],"spread":true},{"title":"multiple.html <span style='color:#111;'> 1.51KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]