validating currency input beyond hunderdth

I have a jquery function that validates a value in US currency format.

j$.validator.addMethod("money", function(value, element) {
         return this.optional(element) || /^(\d{1,3})(\.\d{2})$/.test(value);
}, "Must be in US currency format 0.99");

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This works for currency values from 0.01 up to 999.00, but it fails when a value of a thousand or more.  I'm not very good with regular expressions at all.

How can I modify the regex to correctly validate the value to support currency values up to 999,999.00?

Thanks for any help.