/* A JavaScript implementation of the Secure Hash Algorithm, SHA-256
 * Version 0.3 Copyright Angel Marin 2003-2004 - http://anmar.eu.org/
 * Distributed under the BSD License
 * Some bits taken from Paul Johnston's SHA-1 implementation
 */
var chrsz = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode  */
function safe_add (x, y) {
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}
function S (X, n) {return ( X >>> n ) | (X << (32 - n));}
function R (X, n) {return ( X >>> n );}
function Ch(x, y, z) {return ((x & y) ^ ((~x) & z));}
function Maj(x, y, z) {return ((x & y) ^ (x & z) ^ (y & z));}
function Sigma0256(x) {return (S(x, 2) ^ S(x, 13) ^ S(x, 22));}
function Sigma1256(x) {return (S(x, 6) ^ S(x, 11) ^ S(x, 25));}
function Gamma0256(x) {return (S(x, 7) ^ S(x, 18) ^ R(x, 3));}
function Gamma1256(x) {return (S(x, 17) ^ S(x, 19) ^ R(x, 10));}
function core_sha256 (m, l) {
    var K = new Array(0x428A2F98,0x71374491,0xB5C0FBCF,0xE9B5DBA5,0x3956C25B,0x59F111F1,0x923F82A4,0xAB1C5ED5,0xD807AA98,0x12835B01,0x243185BE,0x550C7DC3,0x72BE5D74,0x80DEB1FE,0x9BDC06A7,0xC19BF174,0xE49B69C1,0xEFBE4786,0xFC19DC6,0x240CA1CC,0x2DE92C6F,0x4A7484AA,0x5CB0A9DC,0x76F988DA,0x983E5152,0xA831C66D,0xB00327C8,0xBF597FC7,0xC6E00BF3,0xD5A79147,0x6CA6351,0x14292967,0x27B70A85,0x2E1B2138,0x4D2C6DFC,0x53380D13,0x650A7354,0x766A0ABB,0x81C2C92E,0x92722C85,0xA2BFE8A1,0xA81A664B,0xC24B8B70,0xC76C51A3,0xD192E819,0xD6990624,0xF40E3585,0x106AA070,0x19A4C116,0x1E376C08,0x2748774C,0x34B0BCB5,0x391C0CB3,0x4ED8AA4A,0x5B9CCA4F,0x682E6FF3,0x748F82EE,0x78A5636F,0x84C87814,0x8CC70208,0x90BEFFFA,0xA4506CEB,0xBEF9A3F7,0xC67178F2);
    var HASH = new Array(0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19);
    var W = new Array(64);
    var a, b, c, d, e, f, g, h, i, j;
    var T1, T2;
    /* append padding */
    m[l >> 5] |= 0x80 << (24 - l % 32);
    m[((l + 64 >> 9) << 4) + 15] = l;
    for ( var i = 0; i<m.length; i+=16 ) {
        a = HASH[0]; b = HASH[1]; c = HASH[2]; d = HASH[3]; e = HASH[4]; f = HASH[5]; g = HASH[6]; h = HASH[7];
        for ( var j = 0; j<64; j++) {
            if (j < 16) W[j] = m[j + i];
            else W[j] = safe_add(safe_add(safe_add(Gamma1256(W[j - 2]), W[j - 7]), Gamma0256(W[j - 15])), W[j - 16]);
            T1 = safe_add(safe_add(safe_add(safe_add(h, Sigma1256(e)), Ch(e, f, g)), K[j]), W[j]);
            T2 = safe_add(Sigma0256(a), Maj(a, b, c));
            h = g; g = f; f = e; e = safe_add(d, T1); d = c; c = b; b = a; a = safe_add(T1, T2);
        }
        HASH[0] = safe_add(a, HASH[0]); HASH[1] = safe_add(b, HASH[1]); HASH[2] = safe_add(c, HASH[2]); HASH[3] = safe_add(d, HASH[3]); HASH[4] = safe_add(e, HASH[4]); HASH[5] = safe_add(f, HASH[5]); HASH[6] = safe_add(g, HASH[6]); HASH[7] = safe_add(h, HASH[7]);
    }
    return HASH;
}
function str2binb (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) << (24 - i%32);
  return bin;
}
function binb2hex (binarray) {
  var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for (var i = 0; i < binarray.length * 4; i++) {
    str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) + hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8  )) & 0xF);
  }
  return str;
}
function hex_sha256(s){return binb2hex(core_sha256(str2binb(s),s.length * chrsz));}

/*
Warwick Poker Society JavaScript
by Andrew Thompson
Copyright © Andrew Thompson 2006
*/

function showError(message)
{
	var msgerror = document.getElementById("msgerror");
	var msgsuccess = document.getElementById("msgsuccess");
	msgerror.innerHTML = message;
	msgsuccess.innerHTML = "";
}

function requiredFieldValidator(element)
{
	if (element.value == "")
	{
		showError("Please enter all required fields");
		return false;
	}
	return true;
}
function matchingFieldValidator(element1, element2, errormsg)
{
	if (element1.value != element2.value)
	{
		showError(errormsg);
		return false;
	}
	return true;
}

/*
Warwick Poker Society JavaScript
by Andrew Thompson
Copyright © Andrew Thompson 2006
*/
var confirmMsgDelete = "Are you sure you want to delete this message?";
var confirmTopicDelete = "Are you sure you want to delete this topic?";
var confirmPicDelete = "Are you sure you want to delete this picture?";
var confirmFameDelete = "Are you sure you want to delete this entry?";

function getTarget(arg0)
{
    if (document.activeElement)
        return document.activeElement;
    else
        return arg0 ? arg0.explicitOriginalTarget : null; //arguments[0]
}

function confirmAction(url, msg)
{
	if ( confirm(msg) != 0 )
	{
		if ( url.indexOf("?") == -1 )
			window.location = url + "?confirmed=1";
		else
			window.location = url + "&confirmed=1";
	}
}

function openChatPopup(height, width)
{
	window.open('/poker/chatrooms/chatroom.asp?detatched=1&chatroomid=1', 'chatwindow','resizable=1, height='+height+', width='+width);
}

function encryptPassword(password)
{
	return hex_sha256("WPS_" + password + "_WPS");
}

/*
Warwick Poker Society JavaScript
by Andrew Thompson
Copyright © Andrew Thompson 2006
*/

function getXmlHttp()
{
var http_request;
if (window.XMLHttpRequest) { // Mozilla, Safari,...
	http_request = new XMLHttpRequest();
	if (http_request.overrideMimeType) {
		http_request.overrideMimeType('text/xml');
	}
} else if (window.ActiveXObject) { // IE
	try {
		http_request = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
			http_request = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {}
	}
}
if (!http_request) {
	alert('Cannot create XMLHTTP instance');
	return false;
}
return http_request;
}

function AjaxObject() {
//var xmlhttp = getXmlHttp();
var items = new Array();

this.Call = function (url, parameters, callback, error)
{
	var callobj = new AjaxCallObj();
	callobj.url = url;
	callobj.parameters = parameters;
	callobj.callback = callback;
	callobj.error = error;
	//callobj.xmlhttp = xmlhttp;
	callobj.Call();
}
}

function AjaxCallObj()
{
this.url;
this.parameters;
this.callback;
this.error;

this.xmlhttp = getXmlHttp();

this.Call = function ()
{
	var callobj = this;
	var xmlhttp = this.xmlhttp;
	xmlhttp.onreadystatechange = function () {
		if (xmlhttp.readyState == 4)
		{
			if (xmlhttp.status == 200)
				callobj.callback(xmlhttp);
			else
				callobj.error(xmlhttp);
		}
	};
	xmlhttp.open('POST', this.url, true);
  	xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlhttp.setRequestHeader("User-Agent", "");
	xmlhttp.setRequestHeader("Accept", "");
	xmlhttp.setRequestHeader("Accept-Charset", "");
	xmlhttp.setRequestHeader("Accept-Language", "");
  	xmlhttp.send(this.parameters);
}
}

function getTarget(arg0)
{
if (document.activeElement)
    return document.activeElement;
else
    return arg0 ? arg0.explicitOriginalTarget : null;
}

function getAjaxPostData(form, arg0)
{
var params = "mode=command";
var target = getTarget(arg0);
if (target != null) params = params + getParam(target.name, target.value);
for(var i=0; i<form.elements.length; i++)
{
	var element = form.elements[i];
	if(element.name != "")
	{
		var elementName = EncodePostData(element.name);
		var type = element.type;
		if ( type == "select-one" || type == "select-multiple" )
			for (var j=0; j < element.options.length; j++)
			{
				var option = element.options[j]
				if (option.selected)
					params = params + getParam(elementName, option.value);
			}
		else if ( 
			element.value != "" && 
			type != "button" && 
			type != "submit" &&
			((type != "checkbox" && type != "radio") || element.checked) )
		{
			params = params + getParam(elementName, element.value);
		}
	}
}
return params;
}

function getParam(name, value)
{
return '&' + name + '=' + EncodePostData(value);
}

function EncodePostData(data)
{
return escape(data).split("+").join("%2b");
}

function getElementsByClass(searchClass,node,tag) {
var classElements = new Array();
if (node == null)
node = document;
if (tag == null)
tag = '*';
var els = node.getElementsByTagName(tag);
var elsLen = els.length;
var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
for (i = 0, j = 0; i < elsLen; i++) {
if (pattern.test(els[i].className) ) {
  classElements[j] = els[i];
  j++;
}
}
return classElements;
}

function isGecko()  {
			var ua = navigator.userAgent.substring(0,11)
			if(ua=='Mozilla/5.0')  {
			return true;
			}
			else {
			return false;
			}
		}
		
if (typeof HTMLElement!="undefined" && isGecko())
HTMLElement.prototype.insertAdjacentHTML = function (sWhere, sHTML) {
	var df;   // : DocumentFragment
	var r = this.ownerDocument.createRange();
	
	switch (String(sWhere).toLowerCase()) {  // convert to string and unify case
	  case "beforebegin":
		 r.setStartBefore(this);
		 df = r.createContextualFragment(sHTML);
		 this.parentNode.insertBefore(df, this);
		 break;
		 
	  case "afterbegin":
		 r.selectNodeContents(this);
		 r.collapse(true);
		 df = r.createContextualFragment(sHTML);
		 this.insertBefore(df, this.firstChild);
		 break;
		 
	  case "beforeend":
		 r.selectNodeContents(this);
		 r.collapse(false);
		 df = r.createContextualFragment(sHTML);
		 this.appendChild(df);
		 break;
		 
	  case "afterend":
		 r.setStartAfter(this);
		 df = r.createContextualFragment(sHTML);
		 this.parentNode.insertBefore(df, this.nextSibling);
		 break;
	}   
}


insertAdjacentHTML = function(element,where,sHTML){
if(element.insertAdjacentHTML){
element.insertAdjacentHTML(where,sHTML);
return
}
var range=element.ownerDocument.createRange();
range.setStartBefore(element);
var ctxFrag=range.createContextualFragment(sHTML);
switch(where){
case'beforeBegin':
element.parentNode.insertBefore(ctxFrag,element)
break;
case'afterBegin':
element.insertBefore(ctxFrag,element.firstChild);
break;
case'beforeEnd':
element.appendChild(ctxFrag);
break;
case'afterEnd':
if(element.nextSibling)
  element.parentNode.insertBefore(ctxFrag,element.nextSibling);
else
  element.parentNode.appendChild(ctxFrag);
break
}
}