/**
* phpBB3 forum functions
*/

/**
* Window popup
*/
function popup(url, width, height, name)
{
	if (!name)
	{
		name = '_popup';
	}

	window.open(url.replace(/&/g, '&'), name, 'height=' + height + ',resizable=yes,scrollbars=yes, width=' + width);
	return false;
}

/**
* Jump to page
*/
function jumpto()
{
	var page = prompt(jump_page, on_page);

	if (page !== null && !isNaN(page) && page == Math.floor(page) && page > 0)
	{
		if (base_url.indexOf('?') == -1)
		{
			document.location.href = base_url + '?start=' + ((page - 1) * per_page);
		}
		else
		{
			document.location.href = base_url.replace(/&/g, '&') + '&start=' + ((page - 1) * per_page);
		}
	}
}

/**
* Mark/unmark checklist
* id = ID of parent container, name = name prefix, state = state [true/false]
*/
function marklist(id, name, state)
{
	var parent = document.getElementById(id);
	if (!parent)
	{
		eval('parent = document.' + id);
	}

	if (!parent)
	{
		return;
	}

	var rb = parent.getElementsByTagName('input');
	
	for (var r = 0; r < rb.length; r++)
	{	
		if (rb[r].name.substr(0, name.length) == name)
		{
			rb[r].checked = state;
		}
	}
}

/**
* Resize viewable area for attached image or topic review panel (possibly others to come)
* e = element
*/
function viewableArea(e, itself)
{
	if (!e) return;
	if (!itself)
	{
		e = e.parentNode;
	}
	
	if (!e.vaHeight)
	{
		// Store viewable area height before changing style to auto
		e.vaHeight = e.offsetHeight;
		e.vaMaxHeight = e.style.maxHeight;
		e.style.height = 'auto';
		e.style.maxHeight = 'none';
		e.style.overflow = 'visible';
	}
	else
	{
		// Restore viewable area height to the default
		e.style.height = e.vaHeight + 'px';
		e.style.overflow = 'auto';
		e.style.maxHeight = e.vaMaxHeight;
		e.vaHeight = false;
	}
}

/**
* Set display of page element
* s[-1,0,1] = hide,toggle display,show
*/
function dE(n, s)
{
	var e = document.getElementById(n);

	if (!s)
	{
		s = (e.style.display == '' || e.style.display == 'block') ? -1 : 1;
	}
	e.style.display = (s == 1) ? 'block' : 'none';
}

/**
* Alternate display of subPanels
*/
function subPanels(p)
{
	var i, e, t;

	if (typeof(p) == 'string')
	{
		show_panel = p;
	}

	for (i = 0; i < panels.length; i++)
	{
		e = document.getElementById(panels[i]);
		t = document.getElementById(panels[i] + '-tab');

		if (e)
		{
			if (panels[i] == show_panel)
			{
				e.style.display = 'block';
				if (t)
				{
					t.className = 'activetab';
				}
			}
			else
			{
				e.style.display = 'none';
				if (t)
				{
					t.className = '';
				}
			}
		}
	}
}

/**
* Call print preview
*/
function printPage()
{
	if (is_ie)
	{
		printPreview();
	}
	else
	{
		window.print();
	}
}

/**
* Show/hide groups of blocks
* c = CSS style name
* e = checkbox element
* t = toggle dispay state (used to show 'grip-show' image in the profile block when hiding the profiles) 
*/
function displayBlocks(c, e, t)
{
	var s = (e.checked == true) ?  1 : -1;

	if (t)
	{
		s *= -1;
	}

	var divs = document.getElementsByTagName("DIV");

	for (var d = 0; d < divs.length; d++)
	{
		if (divs[d].className.indexOf(c) == 0)
		{
			divs[d].style.display = (s == 1) ? 'none' : 'block';
		}
	}
}

function selectCode(a)
{
	// Get ID of code block
	var e = a.parentNode.parentNode.getElementsByTagName('CODE')[0];

	// Not IE
	if (window.getSelection)
	{
		var s = window.getSelection();
		// Safari
		if (s.setBaseAndExtent)
		{
			s.setBaseAndExtent(e, 0, e, e.innerText.length - 1);
		}
		// Firefox and Opera
		else
		{
			// workaround for bug # 42885
			if (window.opera && e.innerHTML.substring(e.innerHTML.length - 4) == '<BR>')
			{
				e.innerHTML = e.innerHTML + '&nbsp;';
			}

			var r = document.createRange();
			r.selectNodeContents(e);
			s.removeAllRanges();
			s.addRange(r);
		}
	}
	// Some older browsers
	else if (document.getSelection)
	{
		var s = document.getSelection();
		var r = document.createRange();
		r.selectNodeContents(e);
		s.removeAllRanges();
		s.addRange(r);
	}
	// IE
	else if (document.selection)
	{
		var r = document.body.createTextRange();
		r.moveToElementText(e);
		r.select();
	}
}

/**
* Play quicktime file by determining it's width/height
* from the displayed rectangle area
*/
function play_qt_file(obj)
{
	var rectangle = obj.GetRectangle();

	if (rectangle)
	{
		rectangle = rectangle.split(',');
		var x1 = parseInt(rectangle[0]);
		var x2 = parseInt(rectangle[2]);
		var y1 = parseInt(rectangle[1]);
		var y2 = parseInt(rectangle[3]);

		var width = (x1 < 0) ? (x1 * -1) + x2 : x2 - x1;
		var height = (y1 < 0) ? (y1 * -1) + y2 : y2 - y1;
	}
	else
	{
		var width = 200;
		var height = 0;
	}

	obj.width = width;
	obj.height = height + 16;

	obj.SetControllerVisible(true);
	obj.Play();
}

/**
* Check if the nodeName of elem is name
* @author jQuery
*/
function is_node_name(elem, name)
{
	return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
}

/**
* Check if elem is in array, return position
* @author jQuery
*/
function is_in_array(elem, array)
{
	for (var i = 0, length = array.length; i < length; i++)
		// === is correct (IE)
		if (array[i] === elem)
			return i;

	return -1;
}

/**
* Find Element, type and class in tree
* Not used, but may come in handy for those not using JQuery
* @author jQuery.find, Meik Sievertsen
*/
function find_in_tree(node, tag, type, class_name)
{
	var result, element, i = 0, length = node.childNodes.length;

	for (element = node.childNodes[0]; i < length; element = node.childNodes[++i])
	{
		if (!element || element.nodeType != 1) continue;

		if ((!tag || is_node_name(element, tag)) && (!type || element.type == type) && (!class_name || is_in_array(class_name, (element.className || element).toString().split(/\s+/)) > -1))
		{
			return element;
		}

		if (element.childNodes.length)
			result = find_in_tree(element, tag, type, class_name);

		if (result) return result;
	}
}

var in_autocomplete = false;
var last_key_entered = '';

/**
* Check event key
*/
function phpbb_check_key(event)
{
	// Keycode is array down or up?
	if (event.keyCode && (event.keyCode == 40 || event.keyCode == 38))
		in_autocomplete = true;

	// Make sure we are not within an "autocompletion" field
	if (in_autocomplete)
	{
		// If return pressed and key changed we reset the autocompletion
		if (!last_key_entered || last_key_entered == event.which)
		{
			in_autocompletion = false;
			return true;
		}
	}

	// Keycode is not return, then return. ;)
	if (event.which != 13)
	{
		last_key_entered = event.which;
		return true;
	}

	return false;
}

/**
* Usually used for onkeypress event, to submit a form on enter
*/
function submit_default_button(event, selector, class_name)
{
	// Add which for key events
	if (!event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode))
		event.which = event.charCode || event.keyCode;

	if (phpbb_check_key(event))
		return true;

	var current = selector['parentNode'];

	// Search parent form element
	while (current && (!current.nodeName || current.nodeType != 1 || !is_node_name(current, 'form')) && current != document)
		current = current['parentNode'];

	// Find the input submit button with the class name
	//current = find_in_tree(current, 'input', 'submit', class_name);
	var input_tags = current.getElementsByTagName('input');
	current = false;

	for (var i = 0, element = input_tags[0]; i < input_tags.length; element = input_tags[++i])
	{
		if (element.type == 'submit' && is_in_array(class_name, (element.className || element).toString().split(/\s+/)) > -1)
			current = element;
	}

	if (!current)
		return true;

	// Submit form
	current.focus();
	current.click();
	return false;
}

/**
* Apply onkeypress event for forcing default submit button on ENTER key press
* The jQuery snippet used is based on http://greatwebguy.com/programming/dom/default-html-button-submit-on-enter-with-jquery/
* The non-jQuery code is a mimick of the jQuery code ;)
*/
function apply_onkeypress_event()
{
	// jQuery code in case jQuery is used
	if (jquery_present)
	{
		$('form input').live('keypress', function (e)
		{
			var default_button = $(this).parents('form').find('input[type=submit].default-submit-action');
			
			if (!default_button || default_button.length <= 0)
				return true;

			if (phpbb_check_key(e))
				return true;

			if ((e.which && e.which == 13) || (e.keyCode && e.keyCode == 13))
			{
				default_button.click();
				return false;
			}

			return true;
		});
	
		return;
	}

	var input_tags = document.getElementsByTagName('input');

	for (var i = 0, element = input_tags[0]; i < input_tags.length ; element = input_tags[++i])
	{
		if (element.type == 'hidden')
			continue;

		// onkeydown is possible too
		element.onkeypress = function (evt) { submit_default_button((evt || window.event), this, 'default-submit-action'); }; 
	}
}

/**
* Detect JQuery existance. We currently do not deliver it, but some styles do, so why not benefit from it. ;)
*/
var jquery_present = typeof jQuery == 'function';

function cmp_box_update(deadline, now, stop){
	
	if(stop)
	{return false;}
	
	var remain_sec 	= Math.floor(deadline-now);
	var remain_min 	= Math.floor(remain_sec/60);
	var remain_hr	= Math.floor(remain_min/60);
	var remain_day	= Math.floor(remain_hr/24);
	var output 		= '';
	
	if (remain_sec <= 0)
	{
		output 	= 'Deadline reached. Refreshing page. 0 seconds ';
		setTimeout(document.location.href = document.location.href , 5000);
	}
	else
	{
	
		if ( remain_day > 0 )
		{
			var s = (remain_day==1) ? '' : 's';
			output = remain_day + ' day' + s;
		}
		else 
		{
			var s = (remain_hr==1) ? '' : 's';
			var s_min = (remain_min==1) ? '' : 's';
			var conv_sec = remain_sec%60;
			var conv_min = remain_min%60;
			var s_sec = (conv_sec==1) ? '' : 's';
			if(remain_hr > 0)
			{
				output += remain_hr + ' hour' + s + ' '; 
			}
			
			output += conv_min + ' minute' + s_min + ' and ' + conv_sec + ' second' + s_sec;
			var interval = 1000;
		}
	}
	var x 			= document.getElementById("cmp_countdown");
		x.innerHTML = output;
		
	now = now+1;
	
	if(interval)
	{
	
		t = setTimeout("cmp_box_update("+deadline+","+now+")" , interval);
	}
}


function limitText(limitField, limitNum) {
    if (limitField.value.length > limitNum) {
        limitField.value = limitField.value.substring(0, limitNum);
    } 
}

function switch_display(id, close_class)
{
	if(!close_class)
	{
		close_class='track_info';
	}
	
	if(document.getElementById(id).style.display == '')
	{
		document.getElementById(id).style.display = 'none';
				
	}
	else
	{
		
		document.getElementById(id).style.display = '';
		
		var divs = document.getElementsByTagName('div');

		for (var i = 0, ele; ele = divs[i]; i++) {
			
			if(ele.id != id)
			{
				if (ele.className == close_class) 
				{
					if (ele.style.display == '')
					{
						ele.style.display = 'none';
					}
				}
			}
		}
	}
}


function line_display(list, div_id)
{
	/* Visit http://www.yaldex.com/ for full source code
	and get more free JavaScript, CSS and DHTML scripts! */
	var outMsg = "";
	var i = 0;
	var lineNo = 1;
	var timerDM=null;
	var msg = " ";
	function araVob() {	}
	
	var ScreenLine = new araVob();
	
	list_length = list.length;
	for (k = 0; k <= list_length; k++)
	{
		l = k + 1;
		ScreenLine[l] = list[k]
	}
	
	/*
	To change or add messages, just replace values of or add to ScreenLine[n]
	above.   Each ScreenLine[n] is a separate line.  To change the "page" before
	the defined page length is reached, insert a \f character at the end of the
	line where you want the break.    Use \" for quotes and \t for tabs in the
	message text.
	*/
	var a=1;
	var msgNum = 1;          // set to first message to display
	var msgCnt = list.length;         // set to number of last message "page" to display.
	var typeSpeed = 27;      // the typing rate, in milliseconds. (Higher number is slower)
	var pageLen = 30;         // set to page size, usually number of ROWS in TEXTAREA
	var delay=typeSpeed;
	var r = 0;
	var cr="\r\n"
	if ("3" <=navigator.appVersion.charAt(0)) {
	var cr="\n"
	}
	for (x = 1; x<=(msgCnt); x++) {
	  ScreenLine[x] = ScreenLine[x] + cr;
	  }
	msg = ScreenLine[1];

	function DisplayMsg() {
	  if (msg.length <= i || msg.charAt(i) == "\f") {
		r=i;
		i=0;
		ChangeMsg();
	  }
	  outMsg = outMsg + msg.charAt(i);
	  i++;
	  if (msg.charAt(i) == "\f" || (lineNo == pageLen && i==msg.length)) {
		delay = 4000; }
	  else {
	  if (msg.charAt(i) == cr && msg != " "+cr) {
		delay = 2000; }
	  else {
		delay = typeSpeed; }
	  }
	  document.getElementById(div_id).innerHTML=outMsg;
	  
	  timerDM = setTimeout(DisplayMsg,delay);
	}

	function ChangeMsg() {
	msgNum++;
	if (msgCnt < msgNum) {
	   clearTimeout(timerDM);
	}
	lineNo++;
	if (pageLen < lineNo || msg.charAt(r) == "\f") {
	  outMsg=ScreenLine[msgNum].charAt(i);
	  i++;
	  
	  lineNo = 1;
	}
	
	  msg = ScreenLine[msgNum];
	}

	function quitDisplay() {
	  document.getElementById(div_id).innerHTML ="";
	}
	DisplayMsg();
	
	
}

function checkform ( form )
{
  // see http://www.thesitewizard.com/archive/validation.shtml
  // for an explanation of this script and how to use it on your
  // own website

  // ** START **
  if (form.title.value == "") {
    alert( "Please enter a title." );
    form.title.focus();
    return false ;
  }
  
  if (form.genre.value == "") {
    alert( "Please select a genre." );
    form.genre.focus();
    return false ;
  }
  
  if (form.mood.value == "") {
    alert( "Please select a mood." );
    form.mood.focus();
    return false ;
  }
  
    
  if (form.track.value == "") {
    alert( "Please select file." );
    form.track.focus();
    return false ;
  }
  // ** END **
  return true ;
}

function makePOSTRequest(review_id, url, parameters) {
  http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
	 http_request = new XMLHttpRequest();
	 if (http_request.overrideMimeType) {
		// set type accordingly to anticipated content type
		//http_request.overrideMimeType('text/xml');
		http_request.overrideMimeType('text/html');
	 }
  } 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;
  }
  
  
  http_request.onreadystatechange = function()
									{
										if (http_request.readyState == 4) {
											 if (http_request.status == 200) {
												//alert(http_request.responseText);
												result = http_request.responseText;
												divId = 'response_' + review_id;
												document.getElementById(divId).innerHTML = result;
												document.getElementById(divId).style.display = 'block';
												setTimeout("document.getElementById(divId).innerHTML = ''",3000);
												setTimeout("document.getElementById(divId).style.display = 'none'",3000);
											 } else {
												alert('There was a problem with the request.');
											 }
										}
									};
  http_request.open('POST', url, true);
  http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  http_request.setRequestHeader("Content-length", parameters.length);
  http_request.setRequestHeader("Connection", "close");
  http_request.send(parameters);
}

function alertContents(review_id) {
alert(http_request.readyState);
  
}

function get(review_id, rating_id, field_id, script) {
  var poststr = "rating=" + encodeURI( document.getElementById(rating_id).value ) +
				"&id=" + encodeURI( document.getElementById(field_id).value );
  makePOSTRequest(review_id, script, poststr);
}