//author : guiyj (evan_gui@163.com) on 2008.12.17 

var gImagesUrl  = "http://image.91.com/zx.sj.91/wm/1201/";		    //图片服务器目录路径
var gSvcUrl     = "http://accounts.mmosite.com/port/js_svc.php?1";	//php脚本服务器端服务请求处理url
var gCurPageUrl = window.location.href;
//var gCurPageUrl = window.location.href.split(','); gCurPageUrl = gCurPageUrl[0];

//----------------------------------------------------------------------
//    1. login
//----------------------------------------------------------------------

//processing mmosite ucenter login 
function mmoUcLoginUser() {
	var url = gSvcUrl; 
	var mmoUcUsername = document.getElementById('mmoUcUsername').value.trim();
	var mmoUcPassword = document.getElementById('mmoUcPassword').value.trim();
	if ('' == mmoUcUsername) {
		document.getElementById('loginResMsg').style.display = "block";
		document.getElementById('loginResMsg').innerHTML = '<font color="red">Please input your username!</font>';
		return false;
	}
	if ('' == mmoUcPassword) {
		document.getElementById('loginResMsg').style.display = "block";
		document.getElementById('loginResMsg').innerHTML = '<font color="red">Please input your password!</font>';
		return false;
	}

	url += '&action=login&u=' + mmoUcUsername + '&p=' + mmo_hhp(mmoUcPassword) + '&r=' + document.getElementById('is_remember').checked + '&s=' + (new Date()).getTime();
	requestSvc('bookmarkJs', url, 'processLoginRes');
	return false;
}

//callback func of logging in ucenter
function processLoginRes(s) {
	var _t = s.split('|');
	s = _t[0];
	eval("var oJson = " + s + ";");
	var result = oJson.result;
	switch (result) {
		case 'success': 
			onMmoUcLoginSuccess();

			//dynamicly write request script string...
			startSynLogin(_t[1]);

//			var loginScriptStrDiv = document.createElement("div");
//			loginScriptStrDiv.id = "loginScriptStrDiv";
//			loginScriptStrDiv.innerHTML = _t[1];
//			document.body.appendChild(loginScriptStrDiv);
			break;
		case 'username_empty': 
			showMmoLoginRes("Please input your username!");
			break;
		case 'passwd_empty': 
			showMmoLoginRes("Please input your password!");
			break;
		case 'user_not_exist':
			showMmoLoginRes("This user do not exist!");
			break;
		case 'passwd_error': 
			showMmoLoginRes("Password error!");
			break;
		default : 
			break;
	}
	return false;
}

//synlogin processing of other sites.
function startSynLogin(_in) {
	var _middle = /"><\/script><script type="text\/javascript" src="/g;  
	var _head = /<script type="text\/javascript" src="/g;  
	var _tail = /"><\/script>/g;
	var _sScript = _in.replace(_middle, '|').replace(_tail, '').replace(_head, '');
	var _a = _sScript.split('|');
	var _l = _a.length;
	for (var i=0; i<_l; i++) {
		requestSvc('l'+i, _a[i]);
	}
	return;
}

function showMmoLoginRes(msg, warm) {
	if ('undefined' == typeof(warm)) {
		warm = true;
	}
	var obb = document.getElementById('loginResMsg');
	document.getElementById('loginResMsg').style.display = "block";
	if (warm) {
		obb.innerHTML = '<font color="red">' + msg + '</font>';
	} else {
		obb.innerHTML = '<font color="green">' + msg + '</font>';
		document.getElementById('loginResMsg').style.background = "none";
	}
}

//
function onMmoUcLoginSuccess() {
//	$('#script_container').html(oJson.scriptStr);
	showMmoLoginRes('success!', false);
	setTimeout("closeMmoLoginDiv()", 2000);
	setTimeout("addToBookmark()", 2200);
	
}

function closeMmoLoginDiv() {
	document.getElementById('mmoLoginDiv').style.display = 'none';
}

//show mmosite ucenter login div
function showMmoLoginDiv() {
	try{
		var inner = '';
		var oLoginDiv = document.getElementById('mmoLoginDiv');

				inner += '<div class="winbox_bg" id="winbox_bg"></div><div class="winbox_main" id="winbox_main"><div class="winbox_close" title="click to close" onclick="closeMmoLoginDiv();"></div><form method="" action="" onSubmit="return mmoUcLoginUser();">';
		inner += '<div class="win_tit">Login</div><div class="win_con"><table width="100%" border="0" cellspacing="0" cellpadding="0">';
		
		inner += '<td colspan="2" class="notice">';
		inner += '<span id="loginResMsg" style="display:none"></span></td>';
		inner += '<tr>';
		inner += '<td colspan="2">Username:<br /> <input id="mmoUcUsername" name="mmoUcUsername" class="input_1" style="width:220px"/></td>';
		inner += '</tr>';
		inner += '<tr>';
		inner += '<td colspan="2">Password:<br /><input id="mmoUcPassword" name="mmoUcPassword" type="password" class="input_1" style="width:120px"/>&nbsp;&nbsp;<a href="http://accounts.mmosite.com/port/psw.php">Forgot password?</a></td>';
		inner += '</tr>';
		inner += '<tr>';
		inner += '<td colspan="2"><input type="checkbox" id="is_remember" name="is_remember">Remember me </br>';
		inner += '</td>';
		inner += '</tr>';
		inner += '<tr>';
		inner += '<td colspan="2" align="center"><input name="submit" type="submit" value="Login" title="Sign in" class="btn_yellow">&nbsp;<input name="submit" type="submit" value="Cancel" onclick="closeMmoLoginDiv();" class="btn_gray"></td>';
		inner += '</tr>';
		inner += '<tr>';
		inner += '<td colspan="2"><a href="http://accounts.mmosite.com/port/reg.php" target="_blank">First here? Sign up</a></td>';
		inner += '</tr>';
		inner += '<div id="scriptStrDiv"></div>';
		inner += '</tr>';
		inner += '</table>';
		inner += '</form><div class="clear"></div></div>';

		if (!oLoginDiv) {
			var clientWidth = document.body.clientWidth;
			var pmwidth  = 300;		//应该作为参数传入的
			var pmheight = 300;		//应该作为参数传入的

			oLoginDiv = document.createElement("div");
			oLoginDiv.id = "mmoLoginDiv";
			oLoginDiv.style.width = pmwidth + 'px';
			oLoginDiv.style.height = pmheight + 'px';
			oLoginDiv.style.left = ((clientWidth - pmwidth) / 2) + 'px';
			oLoginDiv.style.position = 'absolute';
			oLoginDiv.className = "winbox";
			oLoginDiv.style.zIndex = '999';

			document.body.appendChild(oLoginDiv);
			oLoginDiv.innerHTML = inner;
			
			document.getElementById("winbox_bg").style.width = pmwidth + "px";
			document.getElementById("winbox_bg").style.height = pmheight + "px";
			if(document.compatMode == "BackCompat" && navigator.userAgent.indexOf("MSIE")>0){
				
				document.getElementById("winbox_main").style.width = pmwidth - 20 + "px";
			}else{
				document.getElementById("winbox_main").style.width = pmwidth - 40 + "px";
			}
			
			document.getElementById("winbox_main").style.height = pmheight - 20 + "px";
		} else {

			oLoginDiv.style.display = 'block';	
		}
//		oBookmarkDiv.innerHTML = inner;

	}catch( err ){
		alert( "bookmark.js:showCatsDiv" + " | " + err.description );
	}
}

//----------------------------------------------------------------------
//    2. bookmark
//----------------------------------------------------------------------

// show bookmark adding div
//  (in fact we just need to fetch bookmark categores from server)
function addToBookmark() {
	try{
		url = gSvcUrl + '&action=get_bcs&s=' + (new Date()).getTime();
		requestSvc('bookmarkJs', url, 'processGetBcs');
	}catch( err ){
		alert( "bookmark.js:addToBookmark" + " | " + err.description );
	}

}

// callbakc func of addToBookmark
// - if logged in, then show adding bookmark div; else show login div
function processGetBcs(s) {
	var sJson = s.toString();
	eval("var oJson = " + sJson + ";");
	if ('not_logged' == oJson.result) {
		//未登陆
		showMmoLoginDiv();
//		window.open("http://accounts.mmosite.tom/port/login.php?login_remote=true", '_blank', "height=200,width=400,status=no,toolbar=no,menubar=no,location=no");
		return;
	} else if ('success' == oJson.result) {
		//
		var len = oJson.aCatsOptions.length;
		var sCatsOptions = '';

		sCatsOptions += '<option  value="0">Default</option>';
		for (var i=0; i<len; i++) {
			sCatsOptions += '<option value="' + oJson.aCatsOptions[i].bc_id +  '" >' + oJson.aCatsOptions[i].bc_name + '</option>';
		}

		showBookmarkDiv(sCatsOptions);
	} else {

		alert('error occured');
	}
}

//submit bookmark adding result 
function doAddToBookmark() {
	try{
		var oCat = document.getElementById('bm_cid');
		var url = gSvcUrl; 

		url += '&action=add_bookmark';
		url += '&bm_name=' + document.getElementById('bm_name').value;
		url += '&bm_url=' + document.getElementById('bm_url').value;
		url += '&bm_desc=' + document.getElementById('bm_desc').value;
		url += '&bm_cid=' + document.getElementById('bm_cid').value;
		url += '&bm_cname=' + oCat.options[oCat.selectedIndex].text,
		url += '&s=' + (new Date()).getTime();
		requestSvc('bookmarkJs', url, 'processAddBookmark');
		return false;
	}catch( err ){
		alert( "bookmark.js:doAddToBookmark" + " | " + err.description );
	}
}

// callback of doAddToBookmark
function processAddBookmark(s) {
	var sJson = s.toString();
//	alert(sJson);
	eval("var oJson = " + sJson + ";");
	if ('not_logged' == oJson.result) {
		//未登陆
		
	} else if ('success' == oJson.result) {
		//
		alert("success");
		document.getElementById('bookmarkDiv').style.display = 'none';
	} else if ('allready_exist' == oJson.result) {
		//
		alert("this bookmark has been added before");
	} else {
		alert('error occured');
	}
}

//show bookmark adding div
function showBookmarkDiv(sCatsOptions) {
	try{
		var inner = '';
		var oBookmarkDiv = document.getElementById('bookmarkDiv');
		
		inner += '<div class="winbox_bg" id="winbox_bg2"></div><div class="winbox_main" id="winbox_main2"><div class="winbox_close" title="click to close" onclick="document.getElementById(\'bookmarkDiv\').style.display = \'none\';"></div><form action="" method="POST" onsubmit="return doAddToBookmark();">';
		inner += '<div class="win_tit">Bookmark</div><div class="win_con"><div class="title_left">Name: </div><input  type="text" id="bm_name" name="bm_name" value="' + document.title + '" size="55"/> </br>';
		inner += '<div class="title_left">Address: </div><input type="text" id="bm_url" name="bm_url" value="' + gCurPageUrl + '" size="55"/> </br>';
		inner += '<div class="title_left">Category: </div>';
		inner += '<select id="bm_cid">';
		inner += sCatsOptions;
		inner += '</select>';
		inner += '</br>';

		inner += '<div id="adding_cat" style="display: none;">';
		inner += 'Maximum of 50 characters<br><input id="cat_name" type="text" />';
		inner += '<input type="button" onclick="submitAddCat();" value="Create"/>';
		inner += '<a href="javascript: cancelCat();">Cancel</a>';
		inner += '</div>';
		inner += '<div id="add_cat">';
		inner += '<a href="javascript: addCat();">Create category</a>';
		inner += '</div>';


		inner += 'Description:<br><textarea id="bm_desc" rows="5" cols="30" name="bm_desc"></textarea>';
		inner += '<span id="bm_msg" style="display:block"></span>';
		inner += '<input type="submit"  name="submit" value="Confirm" class="btn_yellow"/>&nbsp;';
		inner += '<input type="button"  name="cancel" value="cancel" onclick="document.getElementById(\'bookmarkDiv\').style.display = \'none\';" class="btn_gray"/>';
		inner += '</form><div class="clear"></div></div>';

		if (!oBookmarkDiv) {
			var clientWidth = document.body.clientWidth;
			var pmwidth  = 470;		//应该作为参数传入的
			var pmheight = 420;		//应该作为参数传入的


			oBookmarkDiv = document.createElement("div");
			oBookmarkDiv.id = "bookmarkDiv";
			oBookmarkDiv.className = "winbox";
			oBookmarkDiv.style.width = pmwidth + 'px';
			oBookmarkDiv.style.height = pmheight + 'px';
			oBookmarkDiv.style.left = ((clientWidth - pmwidth) / 2) + 'px';
			oBookmarkDiv.style.position = 'absolute';
			oBookmarkDiv.style.zIndex = '999';

			document.body.appendChild(oBookmarkDiv);
			oBookmarkDiv.innerHTML = inner;
			
			document.getElementById("winbox_bg2").style.width = pmwidth + "px";
			document.getElementById("winbox_bg2").style.height = pmheight + "px";
			if(document.compatMode == "BackCompat" && navigator.userAgent.indexOf("MSIE")>0){
				document.getElementById("winbox_main2").style.width = pmwidth - 20 + "px";
			}else{
				document.getElementById("winbox_main2").style.width = pmwidth - 40 + "px";
			}
			document.getElementById("winbox_main2").style.height = pmheight - 20 + "px";
			
		} else {

			oBookmarkDiv.style.display = 'block';	
		}
//		oBookmarkDiv.innerHTML = inner;

	}catch( err ){
		alert( "bookmark.js:showCatsDiv" + " | " + err.description );
	}
}

function addCat() {
	document.getElementById('adding_cat').style.display = 'block';
	document.getElementById('add_cat').style.display = 'none';
}

function cancelCat() {
	document.getElementById('adding_cat').style.display = 'none';
	document.getElementById('add_cat').style.display = 'block';
}

// do add category
function submitAddCat() {
	var sCatName = document.getElementById('cat_name').value.trim();
	if ('' == sCatName) {
		showCatTip('Please input category name!');
		return ;		
	}

	url = gSvcUrl + '&action=add_bc&bc_name=' + sCatName + '&s=' + (new Date()).getTime();

	requestSvc('bookmarkJs', url, 'processAddBc');
}

function processAddBc(s) {
	var sJson = s.toString();
	eval("var oJson = " + sJson + ";");
	switch (oJson.result.trim()) {
		case 'success':
			addCatOption('bm_cid', oJson.catId, oJson.catName);
			cancelCat();
			setSelectByVal(document.getElementById('bm_cid'), oJson.catId);
			break;
		case 'param_error' :
			showCatTip('parameter error!'); return ; break;
		case 'allready_exist' :
			showCatTip('this category name is allready exist!'); return ; break;
		case 'error' :
			showCatTip('operation failed!'); return ; break;
		default:
			showCatTip('operation failed!'); return ; break;
	}//end of switch}
}

function addCatOption(sltId, catId, catName) {
	var oSelect = document.getElementById(sltId);
	var oOption;
	oOption = document.createElement('option');
	oOption.value = catId;
	oOption.text = catName;
	oSelect.options.add(oOption);
}

function showCatTip(msg, warm) {
	if ('undefined' == typeof(warm)) {
		warm = true;
	}
	var obb = document.getElementById('bm_msg');
	if (warm) {
		obb.innerHTML = '<font color="red">' + msg + '</font>';
	} else {
		obb.innerHTML = '<font color="green">' + msg + '</font>';
	}
}

//----------------------------------------------------------------------
//    3. common functions
//----------------------------------------------------------------------

//defautl callback function
function callbackFunc(s) { }

String.prototype.trim = function() {
	return this.replace(/(^\s*)|(\s*$)/g, '');
}

/**
* select控件可用（根据value定位到下拉控件的相应位置）
*/
setSelectByVal = function(oSelect, selectValue) {
	var iOptionsNum = oSelect.options.length;
	for	(var i=0; i < iOptionsNum; i++) {
		if (oSelect.options[i].value == selectValue) {
			oSelect.options.selectedIndex = i;
			return true;
		}
	}
	return false;
}


function requestSvc(id, url, funcName) {
	if (typeof(funcName) == 'undefined') { funcName = 'callbackFunc'; } 
	url += (url.indexOf('?') == -1) ? '?func_name=' + funcName : '&func_name=' + funcName;
	
	oScript = document.getElementById(id);
	var head = document.getElementsByTagName("head").item(0);
	if (oScript) {
		head.removeChild(oScript);
	}
	oScript = document.createElement("script");
	oScript.setAttribute("src", url);
	oScript.setAttribute("id",id);
	oScript.setAttribute("type","text/javascript");
	oScript.setAttribute("language","javascript");

	head.appendChild(oScript);
	return oScript;
}


//even i do not know what is it(^_^)
function mmo_hhp(hhp) {
	return mmo_hh(hhp.toLowerCase().trim());
}





































//----------------------------------------------------------------------------------
/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */

/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */
var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */
var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function mmo_hh(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }

/*
 * Perform a simple self-test to see if the VM is working
 */
function md5_vm_test()
{
  return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;

  for(var i = 0; i < x.length; i += 16)
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * Calculate the HMAC-MD5, of a key and some data
 */
function core_hmac_md5(key, data)
{
  var bkey = str2binl(key);
  if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

  var ipad = Array(16), opad = Array(16);
  for(var i = 0; i < 16; i++)
  {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
  return core_md5(opad.concat(hash), 512 + 128);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

/*
 * Convert a string to an array of little-endian words
 * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
 */
function str2binl(str)
{
  var bin = Array();
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < str.length * chrsz; i += chrsz)
    bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
  return bin;
}

/*
 * Convert an array of little-endian words to a string
 */
function binl2str(bin)
{
  var str = "";
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < bin.length * 32; i += chrsz)
    str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
  return str;
}

/*
 * Convert an array of little-endian words to a hex string.
 */
function binl2hex(binarray)
{
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i++)
  {
    str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
           hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
  }
  return str;
}

/*
 * Convert an array of little-endian words to a base-64 string
 */
function binl2b64(binarray)
{
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i += 3)
  {
    var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)
                | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
                |  ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
    for(var j = 0; j < 4; j++)
    {
      if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
      else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
    }
  }
  return str;
}