var startDate;
var endDate;
var ONEDAY = 3600 * 24;


Calendar.setup({

inputField  : "package_date_air",         // ID of the input field
button      : "package_date_air_trigger",       // ID of the button
ifFormat       :    "%b %d, %Y",     // format of the input field: Mar 18, 2005
dateStatusFunc    :    disableDates_air  //the function to call
});

Calendar.setup({

inputField  : "package_date_land",         // ID of the input field
button      : "package_date_land_trigger",       // ID of the button
ifFormat       :    "%b %d, %Y",     // format of the input field: Mar 18, 2005
dateStatusFunc    :    disableDates_land  //the function to call

});