Hello list, I am relatively new at JS and also JQuery and am having some problems with configuring the stock datepicker object.

Here is my class structure:
var accounting = 
    init: function()
        var invDate = $("#invDate");
        for(var i = 0, ii = invDate.length; i < ii; i++){
            // an existing date in an input element, format like 'mm-dd-yy'
            idte = document.getElementById('invDate').value;
                minDate: -20, 
                maxDate: "+1M +10D",
                showAnim: "fadeIn",
                altField: "#actualDate",
                changeMonth: true,
                numberOfMonths: 3,
                showButtonPanel: true
            $(invDate).DatePicker("setDate", idte); // fails here
            $(invDate).bind("change", accounting.doInvDate);
     doInvDate: function(event){
        // never gets here
        var dte = $(this).DatePicker("getDate");
        alert('INV Date has changed, returned value is: '+ dte);
This will create the date picker object so that when the input cell is selected, the datepicker object opens, but I cannot set the date. Also, I would like to get the 3 months showing when the cell is selected, but that never happens either.

Any suggestions?