Jquery Datepicker Chrome

I have had the same problem and is related with all Webkit based web browsers. If you set uppercase M the textbox show the moth with letters. The best solution for me was to override the validate date function from jquery.validate.js

Create jquery.validate.date.js and ensure it is loaded after jquery.validate.js

Add the following code to jquery.validate.date.js

$(function() {
    $.validator.methods.date = function (value, element) {
        if ($.browser.webkit) {

            //ES - Chrome does not use the locale when new Date objects instantiated:
            var d = new Date();

            return this.optional(element) || !/Invalid|NaN/.test(new Date(d.toLocaleDateString(value)));
        }
        else {

            return this.optional(element) || !/Invalid|NaN/.test(new Date(value));
        }
    };
});