Help with multiline sum and formatting ","

Hey guys, I need help with an issue I am struggling to solve...

I have a multiline field in which I paste information from an excel spreadsheet. This information is in a 1.234,56 format.

I was able to have the numbers pasted across the field in another field, by removing the ",": something like this:

var withcoma = this.getField("Input_1").value; //this is my multiline field used to paste data from excel

nocoma = withcoma.replace(/\,/g,".");

var values = nocoma.split("\r");

var total = 0;

for (var i in values) total+=Number(values[i]);

this.getField("Total").value = total;

The point is that I need to be able to change the numbers that I have in 1.234,56 format to 1,234.56 format if I choose to use a different currency than my original and also have the numbers in the "Total" field properly updated.

Could someone point me in the right direction?

Many thanks!!!