Shoutbox

Okay so far i've got this in javascript

code:

---

function talker (input) {

    var output=input;
    output=output.replace(new RegExp("Sqrt","gi"),"v");
    output=output.replace(new RegExp("^2","gi"),"²");
    output=output.replace(new RegExp("^3","gi"),"³");
    output=output.replace(new RegExp("/","gi"),"÷");
    output=output.replace(new RegExp("*","gi"),"x");
    return output;
}

---

But when i try it it returns this error
Error:Error: Unexpected quantifier, ; in line 8
so im stumped
so if anyone could give me a tip i could finish it of and post a finished version

<edit>
the "v" is the square root symble i just lost it when i was writing the script
</edit>

oh and if you nick my code please give me credit