IF statement for navigation in a Region Template

Question

I have a region template where I display links to nodes in the current level.
Example:
level 0 nodes: About Us, Employees, Contact Us, Investors
level 1 nodes of About Us: Fun Stuff, Photos, History
level 2 nodes of History: 1910, 1920,1930
So if I was in the section/level About Us>History my region template would display links to 1910,1920,1930. I know there is a fragment that does this for me but what I need is a little more custom.
What I want to do is is write an if statement in the region template that says something like:
If (currentlevel has children)
display childrenlevelNodes
else
display parentlevelNodes
endif
Any ideas? I am a beginner when it comes to Idoc.

Answer 1

Actually I got it working. Someone before me was using some code but it wasn't working exactly how I wanted. So I incorporated their code back in after your help with the childNodeId thing and now it works!!
<!--$childLevel = level-->
<!--$curLevel = level-->
<!--$childNodeId = ssGetRelativeNodeId(siteId, nodeId, "child")-->
<!--$parentNodeId = ssGetRelativeNodeId(siteId, nodeId, "parent")-->
<!--$originalNodeId = nodeId, drewOne = "", originalNodeParentId = ssGetRelativeNodeId(siteId, nodeId, "parent") -->
<ul>
     <li>
<!--$if (childNodeId)-->
     <!--$childLevel = level + 1-->
<!--$endif-->
<!--$loop SiteStudioNavNodes-->
          <!--$if (level eq childLevel) and ((originalNodeId eq parentNodeId) or (originalNodeParentId eq parentNodeId))-->
     <!--$hideIt = ""-->
     <!--$hideFrom = ssGetNodeProperty(SiteStudioNavNodes.nodeId, "hideFromRegion")-->
     <!--$showOnlyIn = ssGetNodeProperty(SiteStudioNavNodes.nodeId, "showOnlyInRegion")-->
          <!--$if showOnlyIn-->
               <!--$if showOnlyIn like ("*" join region join "*")-->
               <!--$else-->
               <!--$hideIt = 1-->
               <!--$endif-->
          <!--$endif-->
     <!--$if hideFrom and (hideFrom like ("*" join region join "*"))-->
     <!--$hideIt = 1-->
     <!--$endif-->
     <!--$if not hideIt-->
          <!--$if drewOne-->
                    <!--$endif-->
                    <!--$label-->
                    <!--$drewOne = 1-->
               <!--$endif-->
          <!--$endif-->
     <!--$endloop-->
     </li>
</ul>