Thank you for your response Georgi, this got me on the right track and I got the keyup functions working however I was only able to do so after setting a timeout at the end of my document ready function....
combobox = $(
//keyup event fires here...
//Create comboboxes etc....
When I remove the timeout I get a message that states input is null or not an object, which leads me to believe it isn't loaded yet... Any way around this?