Datepicker - Multiple Forms on One Page

Having identically same form populated over one page.
DatePicker identify input elements via id, the following concept is to post-create new id before datepicker call.

$("input.calender").each(function(index, element){
    if($(element).hasClass("full")){
        var id = $(element).attr('id');
        $(element).attr('id', id+'_'+index);
        $(element).datepicker({
            dateFormat: "yy-mm-dd",
            changeYear: true,
            changeMonth: true
        });
    }
});