var popupStatus = 0;
function loadPopup() {
    if (popupStatus == 0) {
        $("#backgroundPopup").css({
            "opacity": "0.7"
        });
        $("#backgroundPopup").fadeIn("slow");
        $("#popupContact").fadeIn("slow");
        popupStatus = 1;
    }
}
function disablePopup() {
    if (popupStatus == 1) {
        $("#backgroundPopup").fadeOut("slow");
        $("#popupContact").fadeOut("slow");
        popupStatus = 0;
    }
}
function centerPopup() {
    var windowWidth = document.documentElement.clientWidth;
    var windowHeight = document.documentElement.clientHeight;
    var popupHeight = $("#popupContact").height();
    var popupWidth = $("#popupContact").width();
    $("#popupContact").css({
        "position": "absolute",
        "top": windowHeight / 2 - popupHeight / 2,
        "left": windowWidth / 2 - popupWidth / 2
    });
    $("#backgroundPopup").css({
        "height": windowHeight
    });
}
$(document).ready(function () {
    $("#button").click(function () {
        centerPopup();
        loadPopup();
    });
    $("#popupContactClose").click(function () {
        disablePopup();
    });
    $("#backgroundPopup").click(function () {
        disablePopup();
    });
    $(document).keypress(function (e) {
        if (e.keyCode == 27 && popupStatus == 1) {
            disablePopup();
        }
    });
});