OK guys, solution for the calandar, contacts, etc. sync problem with the iso 7.0.4 iphone sofware and mavericks software.
U have to sync it with icloud. HOW?
(everyone will have an icloud account if you have an apple ID and password). if you don't, create one. in order to do that, click itunesstore tab on your itunes, then click "sign in" tab on top left corner, then create apple ID)
1. go to settings on your iphone.
2. then icloud.
3.plugin ur apple id and pass.
4.turn on the options for contacts, calandar, etc.
your calandar, contacts, etc. will get synced to your icloud. (this replaces the info tab that is missing when you plugin your iphone to sync to your mac on itunes)
If you want to have ur calandar to give ur alerts, etc. ,while working on your mac, just be signed on to icloud on your computer @ www.icloud.com while you're working on your computer.