jQuery加载没有被IE反映出来

I've code that, depending on the selected item in a drop-down, loads some further controls (separate content for index==0 vs. index >= 1). The initial select's selected item is pre-set at the server end. I've and issue with reload/cache, where the user alters but doesn't submit a form and then click reload. Originally, I was loading the default start from the server but the browser reload resulted in an incorrect form state as it (esp. IE) remembered the last selected - but not submitted - control vlaues if the user hit refresh. So, I have this code. Works fine in other browsers but in IE, no content is rendered.I've code that, depending on the selected item