Page method call from JQuery doesn't work in Safari

Question

I am calling a page method from JQUERY which is working fine in Chrome and Firefox however it doesn't work in Safari, can anyone please help?

function setVariables(city, area, date, pooja, isInstant) {

$.ajax({

type: "POST",

url: "Default.aspx/setVariables",

data: "{city: '" + city + "',area:'" + area + "',date: '" + date + "', pooja: '" + pooja + "',isInstant:' " + isInstant + "'}",

contentType: "application/json; charset=utf-8",

dataType: "json",

success: OnsetVariablesSuccess,

failure: function (response) {

}

});

}

function OnsetVariablesSuccess(response) {

if (response.d == 1) {

}

}