Dropdown menu not pulling data correctly

Here is the link to the page that is having the issue. http://www.goliathgames.us/instruction/
What is supposed to happen is you can enter the numeric items in the top search area (this works) or select the product directly and if instructions are available they appear on the page.
When you type in the item number 30616 the products name and instructions pop up (30616=Doggie Doo) However when you go the drop down menu and click Doggie Doo the instructions are not being pulled up. I think something is missing from the code, but I honestly can’t tell. Can someone take a look and tell me what I’m missing?

[Large code excerpt removed by moderator per forum rules. Please use the pastebin for all large code excerpts. It works better anyway.]