How to capture an object when its id changes in runtime environment?

In case, object Id changes in runtime environment, objects can be captured in one of the following ways:

1. using object name instead of object id
2. using object location (x-path)
3. using object value

Tutorials and Download Centers

Download centers: Selenium IDE and Selenium RC
Tutorials: Selenium IDE and Selenium RC

Selenium

I am using Selenium IDE and selenium RC to perform functional testing in web based applications since 2008. I am planning to record challenges and solutions I found to resolve the issues for future reference.