// function create_xhr() {{{
var xhr;

/**
 * Create XMLHttpRequest (XHR) object.
 *
 * @return object  Return XHR object.
 */
function create_xhr() {
	if (window.XMLHttpRequest)
	{
		xhr = new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		xhr = new ActiveXObject('Microsoft.XMLHTTP');
	}
	else
	{
		alert('Nelze vytvořit objekt');
	}
}
// }}}

// function show_xhr_error() {{{
/**
 * Display XHR error and error code, if creation failure.
 *
 * @return void
 */
function show_xhr_error()
{
	alert('XMLHttp Chyba žádosti: '+"\n"+'Chyba: '+xhr.status+"\n"+'Vzkaz: '+xhr.text);
}
// }}}

// function create_th() {{{
/**
 * Create TH element.
 *
 * @param  mixed $content  TH content.
 * @return object  Return TH object.
 */
function create_th(content)
{
	var cell = document.createElement('th');

	if (typeof content == 'object')
	{
		cell.appendChild(content);
	}
	else
	{
		var cellValue = document.createTextNode(content);
		cell.appendChild(cellValue);
	}

	return cell;
}
// }}}

// function create_td() {{{
/**
 * Create TD element.
 *
 * @param  mixed $content  TD content.
 * @return object  Return TD object.
 */
function create_td(content)
{
	var cell = document.createElement('td');

	if (typeof content == 'object')
	{
		cell.appendChild(content);
	}
	else
	{
		var cellValue = document.createTextNode(content);
		cell.appendChild(cellValue);
	}

	return cell;
}
// }}}

// function getElementPosition() {{{
/**
 * Get element position.
 *
 * @param {Object} obj   DOM element.
 * @return {Object}   Returns object with element position.
 */
function getElementPosition(obj)
{
	var curleft, curtop = 0;
	
	if (isObject(obj)) {
		if (obj.offsetParent){
			curleft = obj.offsetLeft;
			curtop  = obj.offsetTop;
			while (obj = obj.offsetParent) {
				curleft += obj.offsetLeft;
				curtop  += obj.offsetTop;
			}
		}
	}
	return {curleft:curleft, curtop:curtop};
}
// }}}

/**
 * Get element size.
 *
 * @param {Object} obj   DOM element.
 * @return {Object}   Returns the element dimension.
 */
function getElementSize(obj)
{
	var width, height = 0;
	
	if (isObject(obj)) {
		width  = obj.offsetWidth;
		height = obj.offsetHeight;
	}
	
	return {width:width, height:height}; 
};

// function arch_odds() {{{
var parE;
/**
 * Generate info about archive course.
 *
 * @param object  $element    Parent element.
 * @param integer $course_id  Course ID.
 * @param string  $table      Table for courses.
 * <ul>
 *	<li><strong>1</strong> - table for 1x2 courses,</li>
 *	<li><strong>2</strong> - table for under/over courses,</li>
 *	<li><strong>3</strong> - table for asian handicap courses,</li>
 *	<li><strong>4</strong> - table for money line courses.</li>
 * </ul>
 * @param string  $type       Course type.
 * <ul>
 *	<li><strong>k1</strong> - K1 courses,</li>
 *	<li><strong>k0</strong> - K0 courses,</li>
 *	<li><strong>k2</strong> - K2 courses,</li>
 *	<li><strong>k10</strong> - K10 courses,</li>
 *	<li><strong>k02</strong> - K02 courses.</li>
 * </ul>
 */
function arch_odds(element, course_id, table, type)
{
	parE = element;

	create_xhr();
	xhr.onreadystatechange = _arch_odds;
	xhr.open('GET', '/gres/archive-odds.php?id='+course_id+'&table='+table+'&type='+type);
	//xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
	xhr.send(null);
}

function _arch_odds()
{
	if (xhr.readyState == 4)
	{
		if (xhr.status == 200)
		{
			var xml = xhr.responseXML;
			var nodata = xml.getElementsByTagName('nodata');

			// some data, show it
			if (nodata.length == 0)
			{
				// check if box for archive courses already generated and remove it
				del_arch_info();
				var elem = xml.getElementsByTagName('element'); // all element with archive courses

				var div  = document.createElement('div');
				div.setAttribute('id', 'aodds-info');
				div.setAttribute('title', 'Klikněte pro zavření');

				// archive course closer
				var closer = document.createElement('div');
				if (navigator.userAgent.match(/MSIE/) && !navigator.userAgent.match(/MSIE 8/))
				{
					closer.setAttribute('className', 'a-closer');
				}
				else
				{
					closer.setAttribute('class', 'a-closer');
				}
				var strong = document.createElement('strong');
				strong.appendChild(document.createTextNode('Archiv kursů'));
				closer.appendChild(strong);
				var link   = document.createElement('a');
				if (navigator.userAgent.match(/MSIE/) && !navigator.userAgent.match(/MSIE 8/))
				{
					link.onclick = new Function("env", "del_arch_info()");
					div.onclick = new Function("env", "del_arch_info()");
				}
				else
				{
					link.setAttribute('onclick', 'del_arch_info()');
					div.setAttribute('onclick', 'del_arch_info()');
				}
				link.appendChild(document.createTextNode('X'));
				closer.appendChild(link);
				div.appendChild(closer);

				// archive course content
				var cont = document.createElement('div');
				if (navigator.userAgent.match(/MSIE/) && !navigator.userAgent.match(/MSIE 8/))
				{
					cont.setAttribute('className', 'a-content');
				}
				else
				{
					cont.setAttribute('class', 'a-content');
				}
				var table = document.createElement('table');
				var tbody = document.createElement('tbody');

				for (var i = 0; i < elem.length; i++)
				{
					var tr = document.createElement('tr');

					var dat = elem.item(i).getElementsByTagName('date');
					dat     = dat.item(0).firstChild.nodeValue;
					
					var course = elem.item(i).getElementsByTagName('course');
					course     = course.item(0).firstChild.nodeValue;

					//var arch = elem.item(i).getElementsByTagName('archive_course');
					//arch     = arch.item(0).firstChild.nodeValue;

					tr.appendChild(create_th(dat));
					tr.appendChild(create_td(course));
					//tr.appendChild(create_td(arch));

					tbody.appendChild(tr);
				}

				table.appendChild(tbody);
				cont.appendChild(table);
				div.appendChild(cont);

				// set position
				var pos = getElementPosition(parE);

				// correction child position (move from right corner)
				var div_main   = document.getElementById('main');
				var correction = 0;

				if ((pos.curleft+125) >= (div_main.offsetLeft+div_main.offsetWidth))
				{
					correction = pos.curleft-(div_main.offsetLeft+div_main.offsetWidth-120);
				}

				var l   = pos.curleft+10-correction;
				var t   = pos.curtop+15;
				
				if (navigator.userAgent.match(/MSIE/) && !navigator.userAgent.match(/MSIE 8/))
				{
					div.style.cssText = 'display:block;top:'+t+'px;left:'+l+'px;';
				}
				else
				{
					div.setAttribute('style', 'display:block;top:'+t+'px;left:'+l+'px;');
				}

				document.body.appendChild(div);
			}
		}
		else
		{
			show_xhr_error();
		}
	}
}
// }}}

// function del_arch_info() {{{
/**
 * Delete archive courses information box.
 *
 * @return void
 */
function del_arch_info()
{
	var box = document.getElementById('aodds-info');
	if (box != undefined)
	{
		document.body.removeChild(box);
	}
}
// }}}

// function tz() {{{
/**
 * Generate table for change timezone.
 *
 */
var tz_uri = null;
var timezone = null;

function tz(uri)
{
	tz_uri = uri;

	create_xhr();
	xhr.onreadystatechange = _tz;
	xhr.open('GET', '/res/timezone.php');
	xhr.send(null);

	return false;
}

function _tz()
{
	if (xhr.readyState == 4)
	{
		if (xhr.status == 200)
		{
			// check if exists timezone element
			var tz = document.getElementById('timezone');
			
			if (tz != undefined)
			{
				getElement('panel').removeChild(tz);
			}

			xml = xhr.responseXML;

			var sel = xml.getElementsByTagName('selected_zone');
			sel     = sel.item(0).firstChild.nodeValue;

			var div   = document.createElement('div');
			div.id    = 'timezone';
			var table = document.createElement('table');
			var tbody = document.createElement('tbody');
			var zone  = xml.getElementsByTagName('timezone');

			if (zone.length > 0)
			{
				for (var i = 0; i < zone.length; i++)
				{
					var row = document.createElement('tr');

					var offset = zone.item(i).getElementsByTagName('offset');
					offset     = offset.item(0).firstChild.nodeValue;

					var location = zone.item(i).getElementsByTagName('location');
					location     = location.item(0).firstChild.nodeValue;

					if(timezone == offset)
					{
						if(navigator.userAgent.match(/MSIE/))
							row.setAttribute('className', 'local');
						else
							row.setAttribute('class', 'local');

						row.title = 'Probably your local timezone';
					}

					var destination = "window.location='"+tz_uri+offset+"';";

					if (navigator.userAgent.match(/MSIE/))
					{
						row.onclick     = new Function("env", destination);
						row.onmouseover = new Function("env", "over(this)");
						row.onmouseout  = new Function("env", "out(this)");

						if (offset == sel)
						{
							row.setAttribute('className', 'set');
						}
					}
					else
					{
						row.setAttribute('onclick', destination);

						if (offset == sel)
						{
							row.setAttribute('class', 'set');
						}
					}

					row.appendChild(create_th(offset));
					row.appendChild(create_td(location));

					tbody.appendChild(row);
				}
			}

			table.appendChild(tbody);
			var table_foot = document.createElement('div');
			table_foot.id  = 'tz-foot';
			table_foot.appendChild(document.createTextNode(' '));
			div.appendChild(table);
			div.appendChild(table_foot);
			document.getElementById('panel').appendChild(div);
		}
		else
		{
			show_xhr_error();
		}
	}

	return false;
}
// }}}

var last_cls; // content last class for row

function over(elem)
{
	if (navigator.userAgent.match(/MSIE/))
	{
		last_cls = elem.getAttribute('className');
		elem.setAttribute('className', 'hover');
	}
	else
	{
		last_cls = elem.getAttribute('class');
		elem.setAttribute('class', 'hover');
	}
}

// function out() {{{
function out(elem)
{
	if (last_cls != undefined && last_cls != '')
	{
		if (navigator.userAgent.match(/MSIE/))
		{
			elem.setAttribute('className', last_cls);
		}
		else
		{
			elem.setAttribute('class', last_cls);
		}
	}
	else
	{
		if (navigator.userAgent.match(/MSIE/))
		{
			elem.removeAttribute('className');
		}
		else
		{
			elem.removeAttribute('class');
		}
	}
}
// }}}

// function getElement() {{{
/**
 * Alias for document.getElementById function.
 *
 * @return object
 */
function getElement(id)
{
	return document.getElementById(id);
}
// }}}

// function legend() {{{
/**
 * Show legend for overall tables.
 *
 * @param  object parentElem  Parent element.
 * @param  string elem        ID of legend table.
 * @return void
 */
function legend(parentElem, elem)
{
	var e = getElement(elem).style;
	var pe = getElementPosition(parentElem);
	var sc = getElementPosition(document.getElementById('main'));

	if (e.display == 'none')
	{
		e.left = pe.curleft-190+'px';
		e.top = pe.curtop-sc.curtop+5+'px';
		e.display = 'block';
	}
	else
	{
		e.display = 'none';
	}
}
// }}}

// function d_option() {{{
/**
 * Disable (remove) option element in pared element (mutual matches combo).
 *
 * @param  string elem  ID of paired element.
 * @return void
 */
var lastRemove;
var lastData;

function d_option(elem)
{
	// get paired element
	var mainElemID = (elem == 'home' ? 'away' : 'home');
	var pairSel    = getElement(elem);
	var mainSel    = getElement(mainElemID);

	pairSel.focus();

	if (lastRemove != undefined && lastData != undefined)
	{
		var lastSel = getElement(lastRemove);
		var opt     = new Array();
		var selected;

		// get all option
		for (var i = 0; i < lastSel.length; i++)
		{
			opt.push(lastSel.options[i].text+'|=|'+lastSel.options[i].value);
		}
		opt.push(lastData[1]+'|=|'+lastData[0]);
		selected = lastSel.options[lastSel.selectedIndex].text;

		// sort option
		opt.sort();

		// remove all childs
		while (lastSel.firstChild)
		{
			lastSel.removeChild(lastSel.firstChild);
		}

		// generate new options
		for (i in opt) {
		    if (typeof opt[i] == 'string') {
                var option  = document.createElement('option');
                var split   = opt[i].split('|=|');

                option.setAttribute('value', split[1]);
                if (split[0] == selected) {
                    option.setAttribute('selected', true);
                }
                option.appendChild(document.createTextNode(split[0]));
                lastSel.appendChild(option);
		    }
		}
	}

	for (var i = 0; i < pairSel.length; i++)
	{
		if (pairSel.options[i].value == mainSel.options[mainSel.selectedIndex].value)
		{
			lastRemove = elem;
			lastData   = [pairSel.options[i].value, pairSel.options[i].text];
			pairSel.removeChild(pairSel.options[i]);
			break;
		}
	}
}
// }}}

// function show_tab() {{{
var last_tab;

/**
 * Show tabs for tables.
 *
 * @param  string $show  ID of tabs which to show.
 * @return void
 */
function show_tab(show)
{
	if (last_tab == undefined)
	{
		last_tab = 'overall';
	}

	var last    = getElement('tab-'+last_tab);
	var last_a  = getElement('a-'+last_tab);
	var new_tab = getElement('tab-'+show);
	var new_a   = getElement('a-'+show);

	setStyle(last, 'display:none;');
	rmClass(last_a);
	setStyle(new_tab, 'display:block;');
	setClass(new_a, 'set');

	last_tab = show;
}
// }}}

// function isIE() {{{
/**
 * Check if user's browser is Internet Explorer.
 *
 * @return boolean  Return <strong>true</strong> if yes, otherwise <strong>false</strong>.
 */
function isIE()
{
	return (navigator.userAgent.match(/MSIE/) ? true : false);	
}
// }}}

// function setStyle() {{{
/**
 * Set CSS style for element.
 *
 * @param  object element  Element for set CSS.
 * @param  string style    CSS style.
 */
function setStyle(element, style)
{
	if (isIE())
	{
		element.style.cssText = style;
	}
	else
	{
		element.setAttribute('style', style);
	}
}
// }}}

// function rmClass() {{{
/**
 * Remove CSS class style for element.
 *
 * @param  object element  Element for set CSS.
 * @param  string style    CSS class style.
 * @deprecated 
 */
function rmClass(element)
{
	if (isIE())
	{
		element.removeAttribute('className');
	}
	else
	{
		element.removeAttribute('class');
	}
}
// }}}

// function setClass() {{{
/**
 * Set CSS class style for element.
 *
 * @param  object element  Element for set CSS.
 * @param  string style    CSS class style.
 * @deprecated
 */
function setClass(elem, cls)
{
	if (isIE())
	{
		elem.setAttribute('className', cls);
	}
	else
	{
		elem.setAttribute('class', cls);
	}
}
// }}}

/**
 * Set CSS class style for element.
 *
 * @param  object element  Element for set CSS.
 * @param  string style    CSS class style.
 */
function setCls(elem, cls)
{
	if (isObject(elem)) {
		isIE() ? elem.setAttribute('className', cls) : elem.setAttribute('class', cls);
	}
};

/**
 * Remove CSS class style for element.
 *
 * @param  object element  Element for set CSS.
 * @param  string style    CSS class style.
 */
function rmCls(elem)
{
	if (isObject(elem)) {
		isIE() ? elem.removeAttribute('className') : elem.removeAttribute('class');
	}
};

var hSel = new Array();

/**
 * Show / hide match status in 'spider-man'.
 *
 * @param {String} id   ID of match stats.
 */ 
function showHide_matches(id)
{
	var minMax      = getElement('mm-' + id);
	var minMaxImage = minMax.firstChild;
	var element     = getElement('matches-' + id);
	var selAway     = getElement('away');
	var selHome     = getElement('home');

	if (isObject(element)) {
		if (element.style.display != 'block') {
			element.style.visibility = 'hidden';
			element.style.display    = 'block';
				
			if (isIE()) {
				
				var dimensionMatchStat = getElementSize(element); 
				var positionMatchStat  = getElementPosition(element);

				var dimensionAway = getElementSize(selAway);
				var dimensionHome = getElementSize(selHome);

				var positionAway = getElementPosition(selAway);	
				var positionHome = getElementPosition(selHome);
		
				// match stats overlay Away option => hide it
				if (((positionMatchStat.curleft >= positionAway.curleft || (positionMatchStat.curleft + dimensionMatchStat.width) >= positionAway.curleft) && ((positionAway.curleft + dimensionAway.width) >= positionMatchStat.curleft))
					&& ((positionMatchStat.curtop >= positionAway.curtop || (positionMatchStat.curtop + dimensionMatchStat.height) >= positionAway.curtop) && ((positionAway.curtop + dimensionAway.height) >= positionMatchStat.curtop)))
				{
					selAway.style.visibility = 'hidden';
					
					if (!hSel.inArray(id + '-away')) {
						hSel[hSel.length] = id + '-away';
					}
				}

				// match stats overlay Home option => hide it
				if (((positionMatchStat.curleft >= positionHome.curleft || (positionMatchStat.curleft + dimensionMatchStat.width) >= positionHome.curleft) && ((positionHome.curleft + dimensionHome.width) >= positionMatchStat.curleft))
					&& ((positionMatchStat.curtop >= positionHome.curtop || (positionMatchStat.curtop + dimensionMatchStat.height) >= positionHome.curtop) && ((positionHome.curtop + dimensionHome.height) >= positionMatchStat.curtop)))
				{
					selHome.style.visibility = 'hidden';
					
					if (!hSel.inArray(id + '-home')) {
						hSel[hSel.length] = id + '-home';
					}
				}
				
			}
			
			// show element
			element.style.visibility = 'visible';
			
			// change title
			minMaxImage.setAttribute('title', 'Klikněte pro skrytí detailů zápasů');
			minMaxImage.setAttribute('alt', 'Klikněte pro skrytí detailů zápasů');
			
			// change minMax DIV CSS class
			setClass(minMax, 'showHideMatches maximize');
		} else {
			element.style.display    = 'none';

			var retObj = unsetHSel(id, 'away');
			hSel = retObj.hSel;
			
			if (retObj.another == false) {
				selAway.style.visibility = 'visible';
			}

			var retObj = unsetHSel(id, 'home');
			hSel = retObj.hSel;
			
			if (retObj.another == false) {
				selHome.style.visibility = 'visible';
			}
			
			// change title
			minMaxImage.setAttribute('title', 'Klikněte pro zobrazení starších kursů');
			minMaxImage.setAttribute('alt', 'Klikněte pro zobrazení starších kursů');
			
			// change minMax DIV CSS class
			setClass(minMax, 'showHideMatches minimize');
		}
	}
};

/**
 * Finds whether the given variable is object.
 *
 * @param {Mixed} element   The variable being evaluated.
 * @return {Boolean}   Returns TRUE if element is object, FALSE otherwise. 
 */
function isObject(element)
{
	return (!isNull(element) && typeof element == 'object' ? true : false);
};

/**
 * Finds whether the given variable is NULL.
 * 
 * @param {Mixed} element   The variable being evaluated.
 * @return {Boolean}   Returns TRUE if element is null, FALSE otherwise.
 */
function isNull(element)
{
	return (typeof element == 'undefined' || element == null ? true : false);
};

/**
 * Create new array with overlayed element and test if exists another match stats.
 *
 * @param {String} id   ID of overlay element.
 * @param {String} elemType   Type of combo box. May by 'home|away'.
 * @return {Object}
 */
function unsetHSel(id, elemType)
{
	var newArray    = new Array();
	var anotherType = false;
	var pattern     = '([0-9]{1,})-' + elemType;
	var chunk       = null;
	
	if (!isNull(id) && !isNull(elemType)) {
		for (var i = 0; i < hSel.length; i++) {
			if (typeof this[i] != 'function') {
				chunk = hSel[i].match(pattern);
				if (chunk != null) {
					if (chunk[1] != id) {
						anotherType = true;
					}
				}
				
				if (hSel[i].match(id) == null) {
					newArray[newArray.length] = hSel[i];
				}
			}
		}
	}
	
	return {hSel:newArray, another:anotherType};
};

function changeNextSport(obj)
{
    window.location=obj.options[obj.selectedIndex].value;
};

function streakMenuDataSh(idData)
{
    document.getElementById('streakMenu_1').className = 'first';
    document.getElementById('streakMenu_2').className = '';
    document.getElementById('streakMenu_3').className = '';
    document.getElementById('streakMenu_' + idData).className = (idData == 1 ? 'first ' : '') + 'set';
    document.getElementById('menuStreakData_1').style.display = 'none';
    document.getElementById('menuStreakData_2').style.display = 'none';
    document.getElementById('menuStreakData_3').style.display = 'none';
    document.getElementById('menuStreakData_' + idData).style.display = 'block';
};

/**
 * Checks if a value exists in an array.
 *
 * @param {String} needle  The searched value.
 * @param {Boolean} strictSearch   Search by the first occurrence of the specified value in index array.
 * @return {Boolean}   Returns TRUE if needle is found in the array, FALSE otherwise.
 */
Array.prototype.inArray = function(needle, strictSearch)
{
	exists       = false;
	strictSearch = isNull(strictSearch) || strictSearch != false ? true : false;
	
	if (!isNull(needle) && isObject(this) && this.length > 0) {
		for (var i in this) {
			if (typeof this[i] != 'function') {
				if (!strictSearch) {
					if (this[i].indexOf(needle) > -1) {
						exists = true;
						break ;
					}
				} else {
					if (this[i] == needle) {
						exists = true;
						break ;
					}
				}
			}
		}
	}
	
	return exists;
};

/**
 * Searches the array for a given value and returns the corresponding key if successful.
 *
 * @param {Mixed} needle   The searched value.
 * @param {Boolean} strictSearch   Search by the first occurrence of the specified value in index array.
 * @return {Mixed}   Returns the key for needle if it is found in the array, FALSE otherwise.
 */
Array.prototype.search = function(needle, strictSearch)
{
	var key      = false;
	strictSearch = isNull(strictSearch) || strictSearch != false ? true : false;
	
	if (!isNull(needle) && isObject(this) && this.length > 0) {
		for (var i = 0; i < this.length; i++) {
			if (!strictSearch) {
				if (this[i].indexOf(needle) > -1) {
					key = i;
					break ;
				}
			} else {
				if (this[i] == needle) {
					key = i;
					break ;
				}
			}
		}
	}
	
	return key;
};