$(function ()
{

    $('#txtStartDate, #txtEndDate').datepicker(
    {
        showOn: "focus",
        beforeShow: customRange,
        dateFormat: "M dd yy",
        firstDay: 1,
        changeFirstDay: false
		
    });

});

function customRange(input)
{
    var min = new Date();
    return {
        minDate: ((input.id == "txtStartDate") ? min : (input.id == "txtEndDate" ? $("#txtStartDate").datepicker("getDate") : null)),
        maxDate: (input.id == "txtStartDate" ? $("#txtEndDate").datepicker("getDate") : null)
    };
}