function onpageLoad()
{
           getdepartflights(1,2);
           getreturnflights(1,2);
}

function getdepartflights(flightID, flightType) {
        PageMethods.getFlights1(flightID, flightType, OnGetMessageSuccessdepart);
    }
function getreturnflights(flightID, flightType) {
        PageMethods.getFlights2(flightID, flightType, OnGetMessageSuccessreturn);
    }

var processor = setInterval(function () {
                    alert("inside");
                    searhflightsdepart(i);
                    clearInterval(processor);




                }, 100);

                var processor2 = setInterval(function () {
                    alert("insidereturn");
                    searhflightsreturn(i);
                    clearInterval(processor2);




                }, 100);