sidestepper

I haven't had certain functions not work at all, but I have had issues with some javascript pop-up calendars not always loading with the page in IE 7, yet always load with FF, in IE 7, I often will have to refresh the page or use something on the page which makes it reload the page before the js calendars show. Then again, it could also be the code, has anyone ever had js not always(but sometimes) load with the page in IE ?