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();

		}

  	}

	catch(e){}

	finally{}

}

// NDK Loading

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[id] :   dom ? document.getElementById(id) :   document.layers[id];

return el;

}



function show_Loading() {

	obj = getobj('LoadingDiv');

	if (timershow) window.clearTimeout(timershow);

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

}



function hide_Loading() {

	obj = getobj('LoadingDiv');

	if (timershow) window.clearTimeout(timershow);

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

}



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('LoadingDiv');

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

	moveobj(obj,curx, newy);

}



function nshow() {

	obj = getobj('LoadingDiv');

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

	moveobj(obj,newx, cury);

}

function nhide() {

	obj = getobj('LoadingDiv');

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

	moveobj(obj,newx, cury);

}

// End

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;

			case 'news' : type = 4; break;

		}

		last_url = '';

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

	}

	return false;



}





function mediaNext()

{

        if(document.getElementById("baihientai"))

           $idnext = document.getElementById("baihientai").value;

		s=$idnext;

		window.location='#Play,'+s;

}

function copy(text2copy) {

  if (window.clipboardData) {

	window.clipboardData.setData("Text",text2copy);

  } else {

	var flashcopier = 'flashcopier';

	if(!document.getElementById(flashcopier)) {

	  var divholder = document.createElement('div');

	  divholder.id = flashcopier;

	  document.body.appendChild(divholder);

	}

	document.getElementById(flashcopier).innerHTML = '';

	var divinfo = '';

	document.getElementById(flashcopier).innerHTML = divinfo;

  }

  alert("Đã copy\nBạn chỉ việc Ctrl+V");

}