var DatePicked = function() {
                var departure = $("#departure");
                var arrival = $("#arrival");
                var nights = $("#nights");

                var triggeringElement = $(this);

                var departureDate = departure.datepicker("getDate");

                var minArrivalDate = new Date();
                if (departureDate != null) {
                        minArrivalDate.setDate(departureDate.getDate() + 1);
                } else {
                        minArrivalDate.setDate(minArrivalDate.getDate() + 1);
                }
                arrival.datepicker('option', 'minDate', minArrivalDate);

                var arrivalDate = arrival.datepicker("getDate");

                if (departureDate != null && arrivalDate != null && triggeringElement.attr("id") != "nights") {
                        var oneDay = 1000*60*60*24;
                        var difference = Math.ceil((arrivalDate.getTime() - departureDate.getTime()) / oneDay);
                        nights.val(difference);
                } else if (departureDate != null && triggeringElement.attr("id") == "nights") {
                        var nightsEntered = parseInt(nights.val());
                        if (nightsEntered >= 2) {
                                var newArrivalDate = new Date();
                                newArrivalDate.setDate(departureDate.getDate() + nightsEntered);
                                arrival.datepicker("setDate", newArrivalDate);
                        } else {
                                alert("Nights must be greater than 2.");
                        }
                }
        }
        $(function() {
                $("#departure, #arrival").datepicker({
                        onSelect: DatePicked
                });
                $("#nights").change(DatePicked);
                DatePicked();
        });

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}