//kiem tra browser cho dung cookie khong

function checkBrowserEnableCookie(){

var cookieEnabled=(navigator.cookieEnabled)? true : false

//if not IE4+ nor NS6+

if (typeof navigator.cookieEnabled=="undefined" && !cookieEnabled){

document.cookie="testcookie"

cookieEnabled=(document.cookie.indexOf("testcookie")!=-1)? true : false

}

if (cookieEnabled) return true;

else return false;

}

//tao cookie

function createCookie(name,value,days) {

if (days) {

var date = new Date();

date.setTime(date.getTime()+(days*24*60*60*1000));

var expires = "; expires="+date.toGMTString();

}

else var expires = "";

document.cookie = name+"="+value+expires+"; path=/";

}

//doc cookie

function readCookie(name) {   

var nameEQ = name + "=";

var ca = document.cookie.split(';');

for(var i=0;i < ca.length;i++) {

var c = ca[i];

while (c.charAt(0)==' ') c = c.substring(1,c.length);

if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

}

return "";

}

//xoa bo cookie

function eraseCookie(name) {

createCookie(name,"",-1);

}

/***************************/

//@Author: Adrian "yEnS" Mato Gondelle

//@website: www.yensdesign.com

//@email: yensamg@gmail.com

//@license: Feel free to use it, but keep this credits please!                   

/***************************/

//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": "0.8"

});

$("#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/5-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

//centering with css

centerPopup();

//load popup

loadPopup();

//Click the button event!

$("#button").click(function(){

//centering with css

centerPopup();

//load popup

loadPopup();

});

//CLOSING POPUP

//Click the x event!

$("#popupContactClose").click(function(){

disablePopup();

});

//Click out event!

$("#backgroundPopup").click(function(){

disablePopup();

});

//Press Escape event!

$(document).keypress(function(e){

if(e.keyCode==27 && popupStatus==1){

disablePopup();

}

});

});