var http = createRequestObject();

var lastUrl = '';

var current_url = '';

var field = '';

var interval = '';
var loading=0; 




function createRequestObject() {

	var xmlhttp;

	try { xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); }

	catch(e) {

    try { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}

	catch(f) { xmlhttp=null; }

  }

  if(!xmlhttp&&typeof XMLHttpRequest!="undefined") {

	xmlhttp=new XMLHttpRequest();

  }

	return  xmlhttp;

}



function sendRequest(current_url,act) {

	try{

		if (act == 'Play' || act == 'Gift' || act == 'Play_Album' || act == 'Play_Singer' || act == 'Play_Playlist')

			field = document.getElementById("playing_field");

		else field = document.getElementById("data_field");

		document.getElementById("loading").innerHTML = loadingText;

		document.getElementById("loading").style.display = "block";
  if (loading==0) {
   loading=1;
   show_Loading();
  }  

		current_url = encodeURIComponent(current_url);

		http.open('POST',  'index.php');

		http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

		http.onreadystatechange = handleResponse;

		http.send('url='+current_url);

	}

	catch(e){}

	finally{}

}



function handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			document.getElementById("loading").style.display = "none";
   hide_Loading();
   loading=0;  

			response = http.responseText;

			if (current_url.indexOf('Play') != -1 || current_url.indexOf('Gift') != -1) {

				field.style.marginBottom = "10";

				/*document.getElementById("show_hide").style.display = "block";*/

			}
field.innerHTML = response;

			field.style.display = "";

			field.scrollIntoView();

			if(player_field==1) {

				delay_getplayer();

				player_field = 0;

			}

		
		}

  	}

	catch(e){}

	finally{}

}



// + ---------------------- +

// |  BEGIN Loading Alpha   |

// + ---------------------- +

var ie45,ns6,ns4,dom;

if (navigator.appName=="Microsoft Internet Explorer") ie45=parseInt(navigator.appVersion)>=4;

else if (navigator.appName=="Netscape"){  ns6=parseInt(navigator.appVersion)>=5;  ns4=parseInt(navigator.appVersion)<5;}

dom=ie45 || ns6;



var timershow=false;

var curx=-200;

var cury=200;

var win_w=window.innerWidth ? window.innerWidth : document.body.offsetWidth;

var mid_w=win_w/2;

var timershow1=window.setInterval("stayMiddle()",1);



function getobj(id) {

el = document.all ? document.all['LoadingDiv'] :   dom ? document.getElementById('LoadingDiv') :   document.layers['LoadingDiv'];

return el;

}



function show_Loading() {

	layout = document.getElementById('Loading_layout');

	layout.style.width = '100%';

	layout.style.height = document.body.offsetHeight+'px';

	obj = getobj();

	if (timershow) window.clearTimeout(timershow);

	timershow=window.setInterval("nshow()",1);

}



function hide_Loading() {

	obj = getobj();

	if (timershow) window.clearTimeout(timershow);

	timershow=window.setInterval("nhide()",1);

	layout = document.all ? document.all['Loading_layout'] :   dom ? document.getElementById('Loading_layout') :   document.layers['Loading_layout'];

	layout.style.width = '0px';

	layout.style.height = '0px';

}



function moveobj(obj,x,y) {

	obj.style.left=x + "px";

	obj.style.top=y+ "px";

	curx=x;

	cury=y;

}



function stayMiddle() {

	if (document.documentElement && document.documentElement.scrollTop)

		var pY =  document.documentElement.scrollTop;

	else if (document.body)

		var pY =  document.body.scrollTop;



	obj = getobj();

	newy = cury+((pY-cury)/16)+12;

	moveobj(obj,curx, newy);

}



function nshow() {

	obj = getobj();

	newx = curx+((mid_w-curx)/16)-7;

	moveobj(obj,newx, cury);

}

function nhide() {

	obj = getobj();

	newx = curx+((0-curx)/16)-15;

	moveobj(obj,newx, cury);

}

// + ---------------------- +

// |    END Loading Alpha   |

// + ---------------------- +

function getVar(url,cnt)

{

	url=url+'#';

	url=url.split('#');

	if (!url[1]) window.location.href = '#Home';

	url=url[1];

	url=url+',';

	url=url.split(',');

	if (url[0] == 'Logout')

		window.location.href = '?refresh=1';

	if (cnt != -1) {

		url=url[cnt];

		if (!url) return '';

	}

	return url;

}



function loadPage() {

	act = getVar(window.location.href,0);

	if (act) {

		current_url=window.location.href;

		current_url=current_url+'#';

		current_url=current_url.split('#');

		current_url=current_url[1];

		if (current_url) sendRequest(current_url,act);

	}

}



function urlCheck()

{

	url=window.location.href;

	if (url.indexOf('?') != -1 ) {

		url_temp = url.split('?');

		clearInterval(interval);

		href = url_temp[0];

		

		url=url+'#';

		url=url.split('#');

		if (url[1]) window.location.href = href+'#'+url[1];

		return;

	}

	if (url != '' && url!=lastUrl)

	{

		loadPage();

		lastUrl=url;

	}

}



function startLoad() {

	interval = setInterval('urlCheck()',100);

}



function alertBrokenLink(id) {

	if (confirm("Báo Link nhạc này đã hỏng ?")) {

		try{

			http.open('POST',  'index.php');

			http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

			http.onreadystatechange = BrokenResponse;

			http.send('url=Broken,'+id);

		}

		catch(e){}

		finally{}

	}

}



function BrokenResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			response = http.responseText;

			if (response == 1) alert("Thông báo đã được gởi đi. Cám ơn bạn đã báo cho chúng tôi.");

			else alert("Lỗi. Mong bạn thử lại.");

		}

  	}

	catch(e){

		alert("Lỗi. Mong bạn thử lại.");

	}

	finally{}

}



function do_search() {

	kw = document.getElementById("keyword").value;

	if (!kw) alert('Bạn chưa nhập từ khóa');

	else {

		kw = encodeURIComponent(kw);

		s_type = document.getElementById("searchType");

		type = s_type.options[s_type.selectedIndex].value;

		switch (type) {

			case 'song' : type = 1; break;

			case 'singer' : type = 2; break;

			case 'album' : type = 3; break;

		}

		last_url = '';

		window.location.href = '#Search,'+type+','+kw;

	}

	return false;



}

// + ---------------------- +

// |        PLAYLIST        |

// + ---------------------- +



function reloadPlaylist(add_id,remove_id) {

	try{

		document.getElementById("playlist_field").innerHTML = loadingText;

		http.open('POST',  'index.php');

		http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

		http.onreadystatechange = playlist_handleResponse;

		http.send('reloadPlaylist=1&add_id='+add_id+'&remove_id='+remove_id);

	}

	catch(e){}

	finally{}

}



function playlist_handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			var response = http.responseText;

			document.getElementById("playlist_field").innerHTML = response;

		}

  	}

	catch(e){}

	finally{}

}



function addToPlaylist(song_id)

{

	reloadPlaylist(song_id,0);

}

function removeFromPlaylist(song_id)

{

	reloadPlaylist(0,song_id);

}



/*------------------------------------------------------*/





function trim(a) {

	return a.replace(/^s*(S*(s+S+)*)s*$/, "$1");

}



// + ------------------- +

// |        LOGIN        |

// + ------------------- +



function login_handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			document.getElementById("login_loading").style.display = "none";

			var response = http.responseText;

			if (response) {

				document.getElementById("login_loading").innerHTML = response;

				document.getElementById("login_loading").style.display = "block";

			}

			else window.location.href = '?refresh=1';

		}

  	}

	catch(e){}

	finally{}

}



function login(form) {

	name = eval('encodeURIComponent('+form+'.name.value);');

	pwd = eval('encodeURIComponent('+form+'.pwd.value);');

	if(	trim(name) == "" ||	trim(pwd) == "")

		alert("Bạn chưa nhập đầy đủ thông tin");

	else {

		try{

			document.getElementById("login_loading").innerHTML = loadingText;

			document.getElementById("login_loading").style.display = "block";

			http.open('POST',  'index.php');

			http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

			http.onreadystatechange = login_handleResponse;

			http.send('login=1&name='+name+'&pwd='+pwd);

			

		}

		catch(e){}

		finally{}

	}

	return false;

}



// + ---------------------- +

// |        REGISTER        |

// + ---------------------- +



function reg_handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			document.getElementById("reg_loading").style.display = "none";

			var response = http.responseText;

			if (response) {

				document.getElementById("reg_loading").innerHTML = response;

				document.getElementById("reg_loading").style.display = "block";

			}

			else {

				window.location.href = '#Login';

			}

		}

  	}

	catch(e){}

	finally{}

}



function reg_check_values() {

	ok = false;

	name = encodeURIComponent(document.getElementById("reg_name").value);

	pwd = encodeURIComponent(document.getElementById("reg_pwd").value);

	pwd2 = encodeURIComponent(document.getElementById("reg_pwd2").value);

	email = encodeURIComponent(document.getElementById("reg_email").value);

	agree = document.getElementById("agree").checked;
	sec_num = document.getElementById("sec_num").value;  

	

	s = document.getElementsByName("reg_sex");

	if (s[0].checked) sex = s[0].value;

	if (s[1].checked) sex = s[1].value;

	

	if(	trim(name) == "" ||	trim(pwd) == "" ||	trim(pwd2) == "" ||	trim(email) == "" )

		alert("Bạn chưa nhập đầy đủ thông tin");

	else

		if (pwd != pwd2) alert("Xác nhận mật khẩu không chính xác");

		else if (!agree) alert("Bạn chưa đồng ý với các quy định của trang Web");

		else {

			try{

				document.getElementById("reg_loading").innerHTML = loadingText;

				document.getElementById("reg_loading").style.display = "block";

				http.open('POST',  'index.php');

				http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

				http.onreadystatechange = reg_handleResponse;

				 http.send('reg=1&name='+name+'&pwd='+pwd+'&email='+email+'&sex='+sex+'&sec_num='+sec_num);  

				

			}

			catch(e){}

			finally{}

		}

	return ok;

}



// + ------------------------- +

// |        CHANGE INFO        |

// + ------------------------- +



function change_info_handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			document.getElementById("change_info_loading").style.display = "none";

			var response = http.responseText;

			if (response) {

				document.getElementById("change_info_loading").innerHTML = response;

				document.getElementById("change_info_loading").style.display = "block";

			}

			else window.location.href = '?refresh=1';

		}

  	}

	catch(e){}

	finally{}

}



function change_info() {

	email = encodeURIComponent(document.getElementById("u_email").value);

	oldpwd = encodeURIComponent(document.getElementById("u_oldpwd").value);

	newpwd_1 = encodeURIComponent(document.getElementById("u_newpwd_1").value);

	newpwd_2 = encodeURIComponent(document.getElementById("u_newpwd_2").value);

	h_sex = document.getElementById("hide_sex").checked;

	h_email = document.getElementById("hide_email").checked;

	s = document.getElementsByName("u_sex");

	if (s[0].checked) sex = s[0].value;

	if (s[1].checked) sex = s[1].value;

	if(	trim(email) == "" )

		alert("Bạn chưa nhập đầy đủ thông tin");

	else if (newpwd_1 != newpwd_2)

		alert("Xác nhận mật khẩu không đúng");

	else {

		try{

			document.getElementById("change_info_loading").innerHTML = loadingText;

			document.getElementById("change_info_loading").style.display = "block";

			http.open('POST',  'index.php');

			http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

			http.onreadystatechange = change_info_handleResponse;

			http.send('change_info=1&email='+email+'&oldpwd='+oldpwd+'&newpwd='+newpwd_1+'&sex='+sex+'&hide_sex='+h_sex+'&hide_email='+h_email);

		}

		catch(e){}

		finally{}

	}

	return false;

}



// + ----------------------------- +

// |        FORGOT PASSWORD        |

// + ----------------------------- +



function forgot_handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			document.getElementById("forgot_loading").style.display = "none";

			var response = http.responseText;

			if (response) {

				document.getElementById("forgot_loading").innerHTML = response;

				document.getElementById("forgot_loading").style.display = "block";

			}

		}

  	}

	catch(e){}

	finally{}

}



function forgot() {

	email = encodeURIComponent(document.getElementById("u_email").value);

	if(	trim(email) == "" )	alert("Bạn chưa nhập email");

	else {

		try{

			document.getElementById("forgot_loading").innerHTML = loadingText;

			document.getElementById("forgot_loading").style.display = "block";

			http.open('POST',  'index.php');

			http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

			http.onreadystatechange = forgot_handleResponse;

			http.send('forgot=1&email='+email);

		}

		catch(e){}

		finally{}

	}

	return false;

}



function popup(url,wdname,width,height)

{

	if (width == null)  { width  = 200; }   // default width

	if (height == null) { height = 400; }   // default height

	newwin=window.open(url,wdname,'fullscreen=no,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width='+width+',height='+height);

	if (document.all)

	{

		newwin.moveTo(0,0);

		newwin.focus();

	}

}



function gift(id,width,height) {

	popup('gift.php?id='+id,'gift',width,height);

}



function comment(id,width,height) {

	popup('comment.php?id='+id,'comment',width,height);

}



function receive_gift(id) {

	window.location.href = '#Gift,'+id;

}



function showComment(media_id) {

	try {

		document.getElementById("comment_field").innerHTML = loadingText;

		document.getElementById("comment_field").style.display = "block";

		http.open('POST',  'comment.php');

		http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

		http.onreadystatechange = function() {

			if((http.readyState == 4)&&(http.status == 200)){

				document.getElementById("comment_field").innerHTML = http.responseText;

			}

		}

		http.send('showcomment=1&media_id='+media_id);

	}

	catch(e){}

	finally{}

	return false;

}



function comment_handleResponse() {

	try {

		if((http.readyState == 4)&&(http.status == 200)){

			var response = http.responseText;

			if (response == 'OK') {

				media_id = encodeURIComponent(document.getElementById("media_id").value);

				showComment(media_id);

			}

			else document.getElementById("comment_loading").innerHTML = response;



		}

  	}

	catch(e){}

	finally{}

}



function comment_check_values() {

	media_id = encodeURIComponent(document.getElementById("media_id").value);

	comment_content = encodeURIComponent(document.getElementById("comment_content").value);

	if(trim(comment_content) == "")

		alert("Bạn chưa nhập cảm nhận");

	else if (comment_content.length > 255)

		alert("Nội dung cảm nhận quá 255 ký tự.");

	else {

		try {

			document.getElementById("comment_loading").innerHTML = loadingText;

			document.getElementById("comment_loading").style.display = "block";

			http.open('POST',  'comment.php');

			http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

			http.onreadystatechange = comment_handleResponse;

			http.send('comment=1&media_id='+media_id+'&comment_content='+comment_content);

		}

		catch(e){}

		finally{}

	}

	return false;

}



function comment_delete(media_id,comment_id) {

	if (confirm("Bạn có muốn xóa cảm nhận này không ?")) {

		document.getElementById("comment_loading").innerHTML = loadingText;

		document.getElementById("comment_loading").style.display = "block";

		http.open('POST',  'comment.php');

		http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

		http.onreadystatechange = comment_handleResponse;

		http.send('delete=1&media_id='+media_id+'&comment_id='+comment_id);

	}

	return false;

}