Homepage: 
http://digitalbush.com/projects/masked-input-plugin 
    Author(s): Josh Bush 
    Version: 1.4.1
This is a masked input plugin for the jQuery javascript library. It allows a user to more easily enter fixed width input where you would like them to enter the data in a certain format (dates,phone numbers, etc). It has been tested on Internet Explorer, Firefox, Safari, Opera, and Chrome. A mask is defined by a format made up of mask literals and mask definitions. Any character not in the definitions list below is considered a mask literal. Mask literals will be automatically entered for the user as they type and will not be able to be removed by the user.The following mask definitions are predefined:
 
-  a - Represents an alpha character (A-Z,a-z)
-  9 - Represents a numeric character (0-9)
-  * - Represents an alphanumeric character (A-Z,a-z,0-9)
  Usage 
The following mask definitions are
predefined: 
-  a - Represents an alpha character (A-Z,a-z)
-  9 - Represents a numeric character (0-9)
-  * - Represents an alphanumeric character (A-Z,a-z,0-9)
 JavaScript API 
$("#date").mask("99/99/9999");
$("#phone").mask("(999) 999-9999");
$("#tin").mask("99-9999999");
$("#ssn").mask("999-99-9999");
Use a space instead of an underscore "_" character as a placeholder
$("#product").mask("99/99/9999",{
  placeholder:" "
});
Add a "completed" callback:
$("#product").mask("99/99/9999",{
  completed: function() {
    alert("You typed the following: "+this.val());
  }
});
Define an own mask:
$.mask.definitions['~']='[+-]';
$("#eyescript").mask("~9.99 ~9.99 999");
  Foswiki integration 
Use the 
jqMaskedInput class name to enable masked input on an input element. The mask itself is specified
in the 
mask attribute.
  Examples