/**
* Handle Firebug calls when Firebug is not available (getfirebug.com)
*/
if (!window.console || !console.firebug)
{
	window.console = {};
	var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
	for (var i = 0; i < names.length; ++i) window.console[names[i]] = function() {};
}

var is_regexp        = (window.RegExp) ? true : false;
var pointer_cursor   = (is_ie ? 'hand' : 'pointer');

/**
* Define the browser loading the page
*
* @var	string	userAgent Useragent string
* @var	boolean	is_opera  Opera
* @var	boolean	is_saf    Safari
* @var	boolean	is_webtv  WebTV
* @var	boolean	is_ie     Internet Explorer
* @var	boolean	is_ie4    Internet Explorer 4
* @var	boolean	is_ie7    Internet Explorer 7
* @var	boolean	is_ps3    Playstation 3
* @var	boolean	is_moz    Mozilla / Firefox / Camino
* @var	boolean	is_kon    Konqueror
* @var	boolean	is_ns     Netscape
* @var	boolean	is_ns4    Netscape 4
* @var	boolean	is_mac    Client is running MacOS
*/
var userAgent = navigator.userAgent.toLowerCase();
var is_opera  = ((userAgent.indexOf('opera') != -1) || (typeof(window.opera) != 'undefined'));
var is_saf    = ((userAgent.indexOf('applewebkit') != -1) || (navigator.vendor == 'Apple Computer, Inc.'));
var is_webtv  = (userAgent.indexOf('webtv') != -1);
var is_ie     = ((userAgent.indexOf('msie') != -1) && (!is_opera) && (!is_saf) && (!is_webtv));
var is_ie4    = ((is_ie) && (userAgent.indexOf('msie 4.') != -1));
var is_ie7    = ((is_ie) && (userAgent.indexOf('msie 7.') != -1));
var is_ps3    = (userAgent.indexOf('playstation 3') != -1);
var is_moz    = ((navigator.product == 'Gecko') && (!is_saf));
var is_kon    = (userAgent.indexOf('konqueror') != -1);
var is_ns     = ((userAgent.indexOf('compatible') == -1) && (userAgent.indexOf('mozilla') != -1) && (!is_opera) && (!is_webtv) && (!is_saf));
var is_ns4    = ((is_ns) && (parseInt(navigator.appVersion) == 4));
var is_mac    = (userAgent.indexOf('mac') != -1);

/**
* Workaround for heinous IE bug - add special vBlength property to all strings
* This method is applied to ALL string objects automatically
*
* @return	integer
*/
String.prototype.vBlength = function()
{
	return (is_ie && this.indexOf("\n") != -1) ? this.replace(/\r?\n/g, "_").length : this.length;
}

/**
* Overrides IE's original String.prototype.substr to accept negative values
*
* @param	integer	Substring start position
* @param	integer	Substring length
*
* @return	string
*/
if ("1234".substr(-2, 2) == "12") // (which would be incorrect)
{
	String.prototype.substr_orig = String.prototype.substr;

	String.prototype.substr = function(start, length)
	{
		if (typeof(length) == "undefined")
		{
			return this.substr_orig((start < 0 ? this.length + start : start));
		}
		else
		{
			return this.substr_orig((start < 0 ? this.length + start : start), length);
		}
	};
}

/**
* Define Array.shift() for browsers that don't have it
*/
if (typeof Array.prototype.shift === 'undefined')
{
	Array.prototype.shift = function()
	{
		for(var i = 0, b = this[0], l = this.length-1; i < l; i++)
		{
			this[i] = this[i + 1];
		}
		this.length--;
		return b;
	};
}

/**
* Function to emulate document.getElementById
*
* @param	string	Object ID
*
* @return	mixed	null if not found, object if found
*/
function fetch_object(idname)
{
	if (document.getElementById)
	{
		return document.getElementById(idname);
	}
	else if (document.all)
	{
		return document.all[idname];
	}
	else if (document.layers)
	{
		return document.layers[idname];
	}
	else
	{
		return null;
	}
}

/**
* Function to emulate document.getElementsByTagName
*
* @param	object	Parent object (eg: document)
* @param	string	Tag type (eg: 'td')
*
* @return	array
*/
function fetch_tags(parentobj, tag)
{
	if (parentobj == null)
	{
		return new Array();
	}
	else if (typeof parentobj.getElementsByTagName != 'undefined')
	{
		return parentobj.getElementsByTagName(tag);
	}
	else if (parentobj.all && parentobj.all.tags)
	{
		return parentobj.all.tags(tag);
	}
	else
	{
		return new Array();
	}
}

/**
* Function to count the number of tags in an object
*
* @param	object	Parent object (eg: document)
* @param	string	Tag type (eg: 'td')
*
* @return	integer
*/
function fetch_tag_count(parentobj, tag)
{
	return fetch_tags(parentobj, tag).length;
}

/**
* Confirms log-out request
*
* @param	string	Log-out confirmation message
*
* @return	boolean
*/
function cf(confirmation_message)
{
	var ht = document.getElementsByTagName("html")[0];
	ht.style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
	if (confirm(confirmation_message))
	{
		return true;
	}
	else
	{
		ht.style.filter = "";
		return false;
	}
}


/**
* Sets a cookie
*
* @param	string	Cookie name
* @param	string	Cookie value
* @param	date	Cookie expiry date
*/
function set_cookie(name, value, expires)
{
	console.log("Set Cookie :: %s = '%s'", name, value);
	document.cookie = name + '=' + escape(value) + '; path=/' + (typeof expires != 'undefined' ? '; expires=' + expires.toGMTString() : '');
}

/**
* Deletes a cookie
*
* @param	string	Cookie name
*/
function delete_cookie(name)
{
	console.log("Delete Cookie :: %s", name);
	document.cookie = name + '=' + '; expires=Thu, 01-Jan-70 00:00:01 GMT' +  '; path=/';
}

/**
* Fetches the value of a cookie
*
* @param	string	Cookie name
*
* @return	string
*/
function fetch_cookie(name)
{
	cookie_name = name + '=';
	cookie_length = document.cookie.length;
	cookie_begin = 0;
	while (cookie_begin < cookie_length)
	{
		value_begin = cookie_begin + cookie_name.length;
		if (document.cookie.substring(cookie_begin, value_begin) == cookie_name)
		{
			var value_end = document.cookie.indexOf (';', value_begin);
			if (value_end == -1)
			{
				value_end = cookie_length;
			}
			var cookie_value = unescape(document.cookie.substring(value_begin, value_end));
			console.log("Fetch Cookie :: %s = '%s'", name, cookie_value);
			return cookie_value;
		}
		cookie_begin = document.cookie.indexOf(' ', cookie_begin) + 1;
		if (cookie_begin == 0)
		{
			break;
		}
	}
	console.log("Fetch Cookie :: %s (null)", name);
	return null;
}


/**
* Resize function for CP textareas
*
* @param	integer	If positive, size up, otherwise size down
* @param	string	ID of the textarea
*
* @return	boolean	false
*/
function resize_textarea(to, id)
{
	if (to < 0)
	{
		var rows = -5;
		var cols = -10;
	}
	else
	{
		var rows = 5;
		var cols = 10;
	}

	var textarea = fetch_object(id);
	if (typeof textarea.orig_rows == 'undefined')
	{
		textarea.orig_rows = textarea.rows;
		textarea.orig_cols = textarea.cols;
	}

	var newrows = textarea.rows + rows;
	var newcols = textarea.cols + cols;

	if (newrows >= textarea.orig_rows && newcols >= textarea.orig_cols)
	{
		textarea.rows = newrows;
		textarea.cols = newcols;
	}

	return false;
}


function ToggleMenuOnOff(menuName) {
	var menu = fetch_object(menuName);
    if (menu.style.display == 'none') {
		menu.style.display = 'block';
	} else {
		menu.style.display = 'none';
	}
}

/**
* Toggles the collapse state of an object, and saves state to 'vbulletin_collapse' cookie
*
* @param	string	Unique ID for the collapse group
*
* @return	boolean	false
*/
function toggle_collapse(objid)
{
	if (!is_regexp)
	{
		return false;
	}

	obj = fetch_object('collapseobj_' + objid);
	img = fetch_object('collapseimg_' + objid);
	cel = fetch_object('collapsecel_' + objid);

	if (!obj)
	{
		// nothing to collapse!
		if (img)
		{
			// hide the clicky image if there is one
			img.style.display = 'none';
		}
		return false;
	}

	if (obj.style.display == 'none')
	{
		obj.style.display = '';
		save_collapsed(objid, false);
		if (img)
		{
			img_re = new RegExp("_collapsed\\.gif$");
			img.src = img.src.replace(img_re, '.gif');
		}
		if (cel)
		{
			cel_re = new RegExp("^(thead|tcat)(_collapsed)$");
			cel.className = cel.className.replace(cel_re, '$1');
		}
	}
	else
	{
		obj.style.display = 'none';
		save_collapsed(objid, true);
		if (img)
		{
			img_re = new RegExp("\\.gif$");
			img.src = img.src.replace(img_re, '_collapsed.gif');
		}
		if (cel)
		{
			cel_re = new RegExp("^(thead|tcat)$");
			cel.className = cel.className.replace(cel_re, '$1_collapsed');
		}
	}
	return false;
}

/**
* Updates vbulletin_collapse cookie with collapse preferences
*
* @param	string	Unique ID for the collapse group
* @param	boolean	Add a cookie
*/
function save_collapsed(objid, addcollapsed)
{
	var collapsed = fetch_cookie('vbcd_collapse');
	var tmp = new Array();

	if (collapsed != null)
	{
		collapsed = collapsed.split('\n');

		for (var i in collapsed)
		{
			if (collapsed[i] != objid && collapsed[i] != '')
			{
				tmp[tmp.length] = collapsed[i];
			}
		}
	}

	if (addcollapsed)
	{
		tmp[tmp.length] = objid;
	}

	expires = new Date();
	expires.setTime(expires.getTime() + (1000 * 86400 * 365));
	set_cookie('vbcd_collapse', tmp.join('\n'), expires);
}

function isInteger(s){
    var i;
    for (i = 0; i < s.length; i++){
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
return true;
}

/**
 * Verifies if the string is in a valid email format
 * @param	string
 * @return	boolean
 */
function isEmail( text )
{
	var pattern = "^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$";
	var regex = new RegExp( pattern );
	return regex.test( text );
}


















/**
* Adds a select item(s) from one list to another
*/
function addSelectedToList( frmName, srcListName, tgtListName ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );
	var tgtList = eval( 'form.' + tgtListName );

	var srcLen = srcList.length;
	var tgtLen = tgtList.length;
	var tgt = "x";

	//build array of target items
	for (var i=tgtLen-1; i > -1; i--) {
		tgt += "," + tgtList.options[i].value + ","
	}

	//Pull selected resources and add them to list
	//for (var i=srcLen-1; i > -1; i--) {
	for (var i=0; i < srcLen; i++) {
		if (srcList.options[i].selected && tgt.indexOf( "," + srcList.options[i].value + "," ) == -1) {
			opt = new Option( srcList.options[i].text, srcList.options[i].value );
			tgtList.options[tgtList.length] = opt;
		}
	}
}

function delSelectedFromList( frmName, srcListName ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );

	var srcLen = srcList.length;

	for (var i=srcLen-1; i > -1; i--) {
		if (srcList.options[i].selected) {
			srcList.options[i] = null;
		}
	}
}

function moveInList( frmName, srcListName, index, to) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );
	var total = srcList.options.length-1;

	if (index == -1) {
		return false;
	}
	if (to == +1 && index == total) {
		return false;
	}
	if (to == -1 && index == 0) {
		return false;
	}

	var items = new Array;
	var values = new Array;

	for (i=total; i >= 0; i--) {
		items[i] = srcList.options[i].text;
		values[i] = srcList.options[i].value;
	}
	for (i = total; i >= 0; i--) {
		if (index == i) {
			srcList.options[i + to] = new Option(items[i],values[i], 0, 1);
			srcList.options[i] = new Option(items[i+to], values[i+to]);
			i--;
		} else {
			srcList.options[i] = new Option(items[i], values[i]);
	   }
	}
	srcList.focus();
	return true;
}

function getSelectedOption( frmName, srcListName ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );

	i = srcList.selectedIndex;
	if (i != null && i > -1) {
		return srcList.options[i];
	} else {
		return null;
	}
}

function setSelectedValue( frmName, srcListName, value ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );

	var srcLen = srcList.length;

	for (var i=0; i < srcLen; i++) {
		srcList.options[i].selected = false;
		if (srcList.options[i].value == value) {
			srcList.options[i].selected = true;
		}
	}
}

function getSelectedRadio( frmName, srcGroupName ) {
	var form = eval( 'document.' + frmName );
	var srcGroup = eval( 'form.' + srcGroupName );

	return radioGetCheckedValue( srcGroup );
}

// return the value of the radio button that is checked
// return an empty string if none are checked, or
// there are no radio buttons
function radioGetCheckedValue(radioObj) {
	if (!radioObj) {
		return '';
	}
	var n = radioObj.length;
	if (n == undefined) {
		if (radioObj.checked) {
			return radioObj.value;
		} else {
			return '';
		}
	}
	for (var i = 0; i < n; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return '';
}

function getSelectedValue( frmName, srcListName ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );

	i = srcList.selectedIndex;
	if (i != null && i > -1) {
		return srcList.options[i].value;
	} else {
		return null;
	}
}

function getSelectedText( frmName, srcListName ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );

	i = srcList.selectedIndex;
	if (i != null && i > -1) {
		return srcList.options[i].text;
	} else {
		return null;
	}
}

function chgSelectedValue( frmName, srcListName, value ) {
	var form = eval( 'document.' + frmName );
	var srcList = eval( 'form.' + srcListName );

	i = srcList.selectedIndex;
	if (i != null && i > -1) {
		srcList.options[i].value = value;
		return true;
	} else {
		return false;
	}
}

// LTrim(string) : Returns a copy of a string without leading spaces.
function ltrim(str)
{
   var whitespace = new String(" \t\n\r");
   var s = new String(str);
   if (whitespace.indexOf(s.charAt(0)) != -1) {
      var j=0, i = s.length;
      while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
         j++;
      s = s.substring(j, i);
   }
   return s;
}

//RTrim(string) : Returns a copy of a string without trailing spaces.
function rtrim(str)
{
   var whitespace = new String(" \t\n\r");
   var s = new String(str);
   if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
      var i = s.length - 1;       // Get length of string
      while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
         i--;
      s = s.substring(0, i+1);
   }
   return s;
}

// Trim(string) : Returns a copy of a string without leading or trailing spaces
function trim(str) {
   return rtrim(ltrim(str));
}

function toggle_collapse(objname, noimg) {
	var obj = $(objname);
	obj.style.display = obj.style.display == '' ? 'none' : '';
	if(!noimg) {
		var img = $(objname + '_img');
		img.src = img.src.indexOf('_yes.gif') == -1 ? img.src.replace(/_no\.gif/, '_yes\.gif') : img.src.replace(/_yes\.gif/, '_no\.gif')
	}
	var collapsed = getcookie('discuz_collapse');
	collapsed =  updatestring(collapsed, objname, !obj.style.display);
	setcookie('discuz_collapse', collapsed, (collapsed ? 86400 * 30 : -(86400 * 30 * 1000)));
}