XPath and XSLT

If you don't want to latch onto a control with JavaScript/jQuery by way of an id, the alternative is to use the XPath which is a means for querying doms in XSLT, a language that transforms XML into reshapen XML or HTML. The process of "I want the third text box in the second div in the body" that one associates with recorded Selenium scripts is an example of this, I think.