Dropdown Menu Flop! need help !!

I believe there was a serious error when upgrading this site ( http://createyourhealth.com ) because the css dropdown menu is now literally ALL OVER THE PLACE .
Umm I have tried deactivating all and have come to realize that the menu has to be hardcoded into the header or index, I’m not too sure how to approach this situation and must be carefull because this site belongs to a good friend of mine who has pourd a lot of his time and effort to create a great resource for everybody . Any suggestions ??