A mask for numbers.
Is uses a NumberParser to format the data. A single parser may (and should!) be used for multiple mask instances.
The parser supports input both from right to left or from left to right. On left to right, the integer part is filled first, and the user must type a decimal separator to enter on decimal part. On right to left, the decimal part is filled first, and, when it's complete, the integer part is filled. On this mode, the parser MUST have the decimalDigits property greater or equals than zero - unlimited decimal size is not supported on right to left filling.
The NumberParser handles numbers using a parser to read the format parameters from it, but does not parses the number. On prior versions, the text was parsed, so the JavaScript precision limited the number length. But, the method getAsNumber() may return a rounded number if the control text represents a number larger than the JavaScript maximum precision allows.

//Assume there is a input on the document
var parser = new NumberParser(2, ",", ".", true);
var mask = new NumberMask(parser, "number");
mask.keyUpFunction = function (event) {
    alert(debug(event));
}