Edit JS Script CS4 (Add XML Tags All pages automatically)

Question

Hi, all Scripter
I have a javascript for add xml tags (ETMV2 Pearson, InDesign CS4).  We have select my powermath equation data then run script. Script automatically insert xml tags both side (open/close). But we select one by one then run script its time taking.
var d=app.activeDocument,
root=d.xmlElements[0],
ie = root.xmlElements.add("inlineequation", app.selection[0]),
im = root.xmlElements.add("inlinemediaobject", ie.texts[0]),
to = root.xmlElements.add("textobject", im.texts[0]);
to.xmlAttributes.add("role", "xpressmath");
Example 1: My powermath equation data (InDesign CS4)
[&x^{2}+y *frac*{1}{2x}&]
Select powermath equation data then run javascript below mention. Script insert xml tags.
<inlineequation><inlinemediaobject><textobject>[&x^{2}+y *frac*{1}{2x}&]</inlineequation></inlinemediaobject></textobject>
Its time taking and select one by one
Result:
My main concern is that is this possible script find open [& and close &] all poermath equation data automatically then insert (add) xml tags all pages.
Thank/Regard
snegig

Answer 1

Hi,
John Hawkinson thank you so much your suggestion.
I am new  this type of discusion (on this page). So i think anybody could not replay my answer. So i repost my question.
I want insert tags in my Indesign CS4 files. Is this posible when i select my powermath equaiton then run script. Script add tags automatically before/after my equation. Please ignore IDML word.
Yes i an comfortable with XSLT presently i working with Pearson ETMV2.
I have one more question when i past my snapshot its appear properly but when i agin see my commant then my snapshot disappear (see small blue rectangle).
Thank you John again i am new in this industry please guide.
snegig