JavaScripting InDesign

I have belatedly realized that some of the Greek symbols might need to be superscripted or italicied (or both), so rather than treat them as an after-the-fact process as I had been, I need to integrate them into the html tags process. The way I choose to do that is to insert tags into the text.

I had hoped to do this with Regex, but my attempts failed and I don't have the time to pursue it any further right now. So instead, I used this approach:

function insertSymTags(theText) {
 var mySymbols = ["κ","µ","α","β","δ","Δ","ζ","γ","ε","λ"];
 for (var j= theText.paragraphs.length - 1; j >=0; j--) {
  var myText = theText.paragraphs[j].contents;
  var myNewText = myText;
  for (var k = mySymbols.length - 1; k >=0; k--) {
   myNewText = myNewText.split(mySymbols[k]).join("" + mySymbols[k] + "");
  }
  if (myText != myNewText) {
   if (myNewText.slice(-1) == "\r") {
    theText.paragraphs[j].characters.itemByRange(0, -2).contents = myNewText.slice(0,-1);
   } else {
    theText.paragraphs[j].contents = myNewText;
   }
  }
 } 
}

I confess that it feels like cheating to resort to split/join, but I don't have the time to fully research this right now.