Jquery Validation in Dates and regular expression

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jQuery

Hi,

1)I Have To compare Dates Of Two Formats: mm-dd-yyyy format to mm/dd/yyyy Format , in Jquery.
and
2)

function validate_date(date) { 
   var pattern = new RegExp(/\b\d{1,2}[\/-]\d{1,2}[\/-]\d{4}\b/); 
   return pattern.test(date); 
}

the above function i use it allows mm/dd/yyy format. it allows month>12 and date>31 i want to restrict that one
please advice how to validate in jquery.
please give answers for above two questions.