CMS – Clean Page structure

I’ve looked and looked to no avail.

I’m looking for a script or straight forward advice/direction that helps with an intuitive page navigation. It should dynamically display all the pages above the current page in the sidebar up to the grand-most parent.

So for instance if my structure is:

1. Page 1

1. Subpage 1.1
2. Subpage 1.2
3. Subpage 1.3

• Page 2

1. Subpage 2.1
2. Subpage 2.2

1. Subpage 2.2.1
2. Subpage 2.2.2
3. Subpage 2.2.3

1. Subpage 2.2.3.1
2. Subpage 2.2.3.2

• Subpage 2.3

1. Subpage 2.3.1
2. Subpage 2.3.2
3. Subpage 2.3.3

1. Subpage 2.3.3.1
2. Subpage 2.3.3.2

Examples:

If I am on page 2 the sidebar displays:

1. Page 2

1. Subpage 2.1
2. Subpage 2.2

1. Subpage 2.2.1
2. Subpage 2.2.2
3. Subpage 2.2.3

1. Subpage 2.2.3.1
2. Subpage 2.2.3.2

• Subpage 2.3

1. Subpage 2.3.1
2. Subpage 2.3.2
3. Subpage 2.3.3

1. Subpage 2.3.3.1
2. Subpage 2.3.3.2

If I am on subpage 1.2 the sidebar displays:

1. Page 1

1. Subpage 1.1
2. Subpage 1.2
3. Subpage 1.3

If I am on subpage 2.3.3.2 the sidebar would contain (NOTE does not include the children of 2.2):

1. Page 2

1. Subpage 2.1
2. Subpage 2.2
3. Subpage 2.3

1. Subpage 2.3.1
2. Subpage 2.3.2
3. Subpage 2.3.3

1. Subpage 2.3.3.1
2. Subpage 2.3.3.2