Need to combine JavaScripts in to one JS file and make it works in one page

General information for the website: .
Kind of development: Customization of existing website
Num. of web pages/modules: 1
Description of requirements/features: Hi there,
I have 5 different JS script
when add in to 1 page -unable to make it work all of them (conflict)

May be this is a only few min works you can play well with JavaScript
Please see the working links below and also i have attached the all the JS in to one notepad as a attachment

Working links:
http://www.wearephoenix.net/apps/category/
http://www.wearephoenix.net/apps/variation-dynamic-images
http://www.wearephoenix.net/apps/Tittle_Item&number
http://www.wearephoenix.net/apps/related_products/
http://www.wearephoenix.net/apps/feedback/feedback3.html
Extra notes: