Using observe_field with multiple inputs

Question

Hello,

I'm trying to get my code to work with multiple html inputs. As of right now it works with just one input (text) but I want to introduce another two inputs as part a searching capability(displaying results with update option..)

If I have three inputs, lets say search1, search2, search3

observe_field 'search1', .... :with => "'search1=' + escape(value)", ....)

how can I work this into using the other 2 inputs, and if not is there any another way?

thank you