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

//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");
 $("#popup_login").fadeIn("slow");
 popupStatus = 1;
 }
}

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

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


//CONTROLLING EVENTS IN jQuery
$(document).ready(function() {

    //LOADING POPUP
    //Click the button event!
    $(".click_through_popUp").click(function() {
        
        //centering with css
        centerPopup();
        //load popup
        loadPopup();
    });

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

});