//SETTING UP OUR POPUP  
//0 means disabled; 1 means enabled;
var popupStatus = 0;
var popupParameter = null;

//loading popup with jQuery magic!  
function loadPopup() {
    //loads popup only if it is disabled  
    if (popupStatus == 0) {
        $("#backgroundPopup").css({
            "opacity": "0.7"
        });
        $("#backgroundPopup").fadeIn("slow");
        $("#popupContact").fadeIn("slow");
        popupStatus = 1;
    }
}

//disabling popup with jQuery magic!  
function disablePopup() {
    //disables popup only if it is enabled  
    if (popupStatus == 1) {
        $("#backgroundPopup").fadeOut("slow");
        $("#popupContact").fadeOut("slow");
        popupStatus = 0;
    }
}

//centering popup  
function centerPopup() {
    //request data for centering  
    var windowWidth = document.documentElement.clientWidth;
    var windowHeight = document.documentElement.clientHeight;
    var popupHeight = $("#popupContact").height();
    var popupWidth = $("#popupContact").width();
    //centering  
    $("#popupContact").css({
        "position": "absolute",
        "top": windowHeight / 2 - popupHeight / 2,
        "left": windowWidth / 2 - popupWidth / 2
    });
    //only need force for IE6  

    $("#backgroundPopup").css({
        "height": windowHeight
    });

}

$(document).ready(function() {
    //CLOSING POPUP  
    //Click out event!  
    $("#backgroundPopup").click(function(){  
    disablePopup();  
    });  
    //Press Escape event!  
    $(document).keypress(function(e){  
    if(e.keyCode==27 && popupStatus==1){  
    disablePopup();  
    }  
    });  
});

function OpenPopup(parameter) {
    popupParameter = parameter;
    //centering with css  
    centerPopup();
    //load popup  
    loadPopup();
}