Hello Jongware,

I managed to find the script that I was looking for above. I found a script posted by B. Eenkhoorn. That is Convert Paragraph to Table and Apply Table Style. If you have another minute for hand-holding, the script bombs on line 15 and also on the following line:
for (var i = result.length-1; i >= 0; i-)

Thank you again,
Martin

Here it is:
***********************************************************************

book = app.activeBook;

for (var i=0; i<book.bookContents.length; i++)
{
var currentDoc = app.open (book.bookContents[i].fullName, false);

// DO THINGS HERE FOR EVERY BOOK

currentDoc.close(SaveOptions.YES);
}

//Script to convert Paragraph to Table and apply table style
//==================
app.findGrepPreferences = null;
app.findGrepPreferences.appliedParagraphStyle = app.documents.firstItem().paragraphStyles.itemByName = “Heading 3″;

var result = app.documents.firstItem().findGrep();
for (var i = result.length-1; i >= 0; i-)

{
var a_text =(result[i].characters.lastItem().contents == ‘\r’)
? result[i].parentStory.characters.itemByRange(result[i].characters.firstItem().index, result[i].characters.lastItem().index -1)
: result[i];
var a_table = a_text.convertToTable( );
}

app.findGrepPreferences = null;
var d = app.activeDocument;
var myTableStyle = myDisplayDialog ();

d.stories.everyItem().tables.everyItem().appliedTableStyle = myTableStyle;
d.stories.everyItem().tables.everyItem().clearTableStyleOverrides( true );

function myDisplayDialog(){
var myDialog = app.dialogs.add({name:”Avakov Table Stripes”});
with(myDialog.dialogColumns.add()){
var myTsDropDown = dropdowns.add({stringList: d.tableStyles.everyItem().name, selectedIndex:d.tableStyles.length-1});
}
var myResult = myDialog.show();
if(myResult == true){
var tS = d.tableStyles[myTsDropDown.selectedIndex];
myDialog.destroy();
}
else{
myDialog.destroy();
exit()
}
return tS;
}

Thank you Jongware, making progress !

Got past up to line 27 :)

but on line 28, this one:
myCellStyle[c][/c].parent.appliedCellStyle = “Header Cell”;

I got the following error: Offending Text: /

I assume there is something with [/c] entity that is not accepted.

Thank you again,
Martin

Thank you, David, I tried but it is just cumbersome and the reason is that it takes a bit of time to re-open the Find again. There should be something like Ctrl+Tab, so that both remain open and it would be fast to go back and forth.

Any better alternatives?