Safari on iPhone has a number of things that are NOT implemented. Here’s a list of things that don’t seem to work (and I’ll be adding more as time goes on):
Javascript:
- window.onmousedown
- window.onclick
- window.onscroll
CSS:
- overflow:hidden
- position:fixed
- position:static
- -webkit-column-*
If you find any more, please leave them in the comments and I’ll add them to the list.