Help with Flash Ticker

i have got i problem. i have a flash ticker. i download it from net, it works fine and no problem with ticker, it takes input from a XML file you write your msg in that XML file it will display but i need a little modification, it goes from right to left and i want it to go from left to right, what should i do change in Action Script
here is the Action Script.

firstPart = messageText.substring( 0, 1 );
secondPart = messageText.substring(1, messageText.length );
messageText = secondPart add firstPart;

and here is the ticker files (swf+XML+fla)

[COLOR=DarkRed]i need it to run from left to right.[/COLOR]
plz help me fast.