pStack plugin for jQuery.
Allows successive AJAX calls to replace contents of an element, whilst keeping previous contents in a stack.
Previous element contents can then be recalled by pop()ing them back off the stack.
Usage:
`
this is the DOM chunk which dynamic things will happen to
Next ---
nextView.html might look like this (ie, not a complete HTML document):
<p>This is my new DOM contents</p> <p><a href="#" class="stackPop">--- Prev</a></p>
