"use strict";

// some common javascript functionality for mrfootage

// Popups
function popup_qt_web(adr) {
//  var winOpts = "width=800,height=768,scrollbars=no,menubar=no,directories=no,location=no,toolbar=no,status=no";
  var winOpts = "width=510,height=480,scrollbars=no,menubar=no,directories=no,location=no,toolbar=no,status=no";
  var objectview = window.open(adr,"",winOpts);
  objectview.focus();
}
function popup_600x800(adr) {
  var winOpts = "width=600,height=800,scrollbars=no,menubar=no,directories=no,location=no,toolbar=no,status=no";
  var objectview = window.open(adr,"",winOpts);
  objectview.focus();
}
function popup_qt_web_higher_quality(adr) {
  var winOpts = "width=800,height=650,scrollbars=no,menubar=no,directories=no,location=no,toolbar=no,status=no";
  var objectview = window.open(adr,"",winOpts);
  objectview.focus();
}
function popup_shot_detail(adr) {
  var winOpts = "width=610,height=510,scrollbars=1,status=0";
  var objectview = window.open(adr,"",winOpts);
  objectview.focus();
}
function getOpenQtUrl(prefix, shotNumb) {
  checkInitSettingsObj();
  var url = prefix + './pages/assets_clip/popup_play.php?random_numb=' + window.settingsObj.randomNumb +
  '&session_numb=' + window.settingsObj.sessionNumb + '&session_numbbis=' + window.settingsObj.sessionNumbBis +
  '&language_numb=' + window.settingsObj.languageNumb + '&business_numb=' +
  window.settingsObj.businessNumb + '&shot_numb=' + shotNumb;
  return url;
}
/// Opens a popup player
/// @param prefix Any url prefix such as some redirect url
/// @param shotNumb The number of the clip that is to be played
function openQt(prefix, shotNumb) {
  var url = getOpenQtUrl(prefix, shotNumb);
  popup_qt_web(url);
}

window.settingsObj = new Object();
// Some settings
function initSettingsObj(randomNumb, sessionNumb, sessionNumbBis, languageNumb, businessNumb, menuCliplistColor, clipBgColor, left_col_width, mid_col_width, menu_numb, menu_lev, jsPathPrefix) {
  window.settingsObj.randomNumb = randomNumb;
  window.settingsObj.sessionNumb = sessionNumb;
  window.settingsObj.sessionNumbBis = sessionNumbBis;
  window.settingsObj.languageNumb = languageNumb;
  window.settingsObj.businessNumb = businessNumb;
  window.settingsObj.menuCliplistColor = menuCliplistColor;
  window.settingsObj.clipBgColor = clipBgColor;
  window.settingsObj.left_col_width = left_col_width;
  window.settingsObj.mid_col_width = mid_col_width;
  window.settingsObj.jsPathPrefix = jsPathPrefix;
  var trackName = "";
  if (businessNumb == 1000) {
    trackName = "mn" + menu_numb + "_" + menu_lev;
  }
//  googleAnalytics(trackName);
}
function checkInitSettingsObj() {
  if (window.settingsObj.businessNumb == null) {
    // Not initialized, try to do it now.
    callInitSettingsObj();
  }
}
// Specialized functions for handling search result lists and clips

/// Handles the select button/checkbox on the search results, switching color and calling the ajax_add_delete_log function.
/// @param shotId The id of the shot that was clicked.
function hndlSelect(shotId) {
  checkInitSettingsObj();
  if ($('input[name=check_' + shotId + ']').is(':checked')) {
    $('#tr_' + shotId).css('background-color', '#' + window.settingsObj.menuCliplistColor);
  } else {
    $('#tr_' + shotId).css('background-color', '#' + window.settingsObj.clipBgColor);
  }
  ajax_add_delete_log(shotId, window.settingsObj.sessionNumb, window.settingsObj.businessNumb);
}
/// Highlight all of the selected clips, usually after loading a page
function highlightSelectedClips() {
  checkInitSettingsObj();
  $("tr[id^='tr_']").each(function(){
    if ($(this).find("td input:checked").length > 0) {
      $(this).css('background-color', '#' + window.settingsObj.menuCliplistColor);
    } else {
      $(this).css('background-color', '#' + window.settingsObj.clipBgColor);
    }
  });
}
function selectall() {
  $("input[name^='check_']:not(:checked)").click();
  $('input[type=checkbox]:not(:checked)').find("input[name^='check_']").click();
  highlightSelectedClips();
}
function deselectall() {
  $("input[name^='check_']:checked:enabled").click();
  highlightSelectedClips();
}
function ajax_add_delete_log(clipnbr,sessionnbr,businessnbr)
{
  var url=""+window.settingsObj.jsPathPrefix+"ajaxWrapper.php";
  url=url+"?fn=pages/assets_clip/_ajax_called_add_delete_log_to_cliplist.php&shot_numb="+clipnbr;
  url=url+"&session_numb="+sessionnbr;
  url=url+"&business_numb="+businessnbr;
  url=url+"&sid="+Math.random();
  $(window).load(url, function(responsetext, textstatus, xmlhttprequest) {
    var parts = responsetext.split(" ", 1);
    $(".clipListCounter").text("("+parts[0]+")");
//    $(".clipListCounter").text(responsetext);
  });
}
function reportProblem(shotnumber) {
  var url = ""+window.settingsObj.jsPathPrefix+"pages/assets_clip/reportClipProblem.php?shot_numb="+shotnumber;//+"&session_numb="+sessionnbr+"&business_numb="+businessnbr+"&sid="+Math.random();
  popup(url, "Report shot problem", "");
}

$(document).ready(function(){
  callInitSettingsObj();
  // Default input focus in search box:
  if ($('#setfocus').size() === 0) {
    $('.setfocus').focus();
  } else {
    $("#setfocus").focus();
  }
  highlightSelectedClips();
});

function popup(url, title, params) {
  window.open(url, title, params);
  return false;
}
/// Run when everything is loaded. Later than .ready
$(window).load(function () {
  // This replaces all inline html cellpadding/cellspacing. Needs to be done after any tables have been created
  $('table').attr({
    cellSpacing : 0
  });
  $('table').attr({
    cellPadding : 0
  });
  checkInitSettingsObj();
  // init the clip list counters
  ajax_add_delete_log(0, window.settingsObj.sessionNumb, window.settingsObj.businessNumb);
  // msie special
  if ((/MSIE \d/.test(navigator.userAgent)) && !/Opera/.test(navigator.userAgent)) {
    // The poor guy is running MSIE
    document.cookie="mytestcookie";
    var cookiesWork = (document.cookie.indexOf("mytestcookie") != -1) ? true : false;
    if (!cookiesWork) {
      var msg = "<big>Are you using Internet Explorer?<br/>" +
        "We suggest that you use another browser, such as Firefox, Safari, Google Chrome or Opera which allow us to use cookies.<br/>" +
        "Alternatively, you need to change the settings in order to accept cookies from our main server http://" +
        window.location.hostname +
        ".<br/>This is a simple process and <a rel='nofollow' href='#' onclick='javascript:return popup(\"/pages/info/cookiesinmsie.php\", \"Cookies in Internet Explorer\", \"toolbar=1, scrollbars=1, statusbar=1, menubar=1, resizable=1, width=500, height=500\");'>this is a step-by-step guide</a>.<br/>" +
        "</big>";
      $('body').prepend(msg);
    }
  }
});

// Google analytics
function StartTracking(trackName){
  var pageTracker;
  if (typeof(_gat) == 'object')
  {
    window.clearTimeout(hndl);
    if (trackName.length) {
      pageTracker =_gat._getTracker("UA-11700498-1");
      pageTracker._initData();
      pageTracker._setDomainName("stock.mrfootage.com");
      pageTracker._trackPageview(trackName);
    }
    // Update the old GA account too
    var pageTrackerAll =_gat._getTracker("UA-1506104-1");
    pageTrackerAll._initData();
    pageTrackerAll._setDomainName("none");
    pageTrackerAll._trackPageview();
  } else {
    var hndl = window.setTimeout("StartTracking('"+trackName+"')", 1000);
  }
}
function googleAnalytics(trackName) {
  var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
  document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
  var hndl = window.setTimeout("StartTracking('"+trackName+"')", 100);
}

// some royalty-free functions
function checkcountryddl() {
  var countryCode = $('#email_cl_sender_country').val();
  switch (countryCode) {
    case 'GB':
      updatePriceLabel(true);
      $('[name=email_cl_sender_euvatid]').val('NA');
      $('#vatLabel').html('UK, price will include 20% VAT');
      $('#countrytype').val('uk');
      break;
    case 'AT':
    case 'BE':
    case 'CY':
    case 'CZ':
    case 'DK':
    case 'EE':
    case 'FI':
    case 'FR':
    case 'FX':
    case 'MC':
    case 'DE':
    case 'GR':
    case 'HU':
    case 'IE':
    case 'IT':
    case 'LV':
    case 'LT':
    case 'LU':
    case 'MT':
    case 'NL':
    case 'PL':
    case 'PT':
    case 'SK':
    case 'ES':
    case 'SI':
    case 'SE':
    case 'BG':
    case 'RO':
      updatePriceLabel(false);
      if ($('[name=email_cl_sender_euvatid]').val() == 'NA') {
        $('[name=email_cl_sender_euvatid]').val('');
      }
      $('#vatLabel').html('EU country except UK, requires EU VAT ID');
      $('#countrytype').val('euexceptuk');
      break;
    default:
      updatePriceLabel(false);
      $('[name=email_cl_sender_euvatid]').val('NA');
      $('#vatLabel').html('USA or other non-EU country. No VAT charged.');
      $('#countrytype').val('noneucountry');
      break;
  }
}
/// Pads with at most one leading zero
function padzero(nbr) {
  var s = nbr.toString();
  if (s.length < 2) {
    s = "0" + s;
  }
  return s;
}
function updateTcOut(id) {
  $('#tc_in_'+id.toString()).val(padzero($('#tc_in_'+id+'_hh').val())+':'+padzero($('#tc_in_'+id+'_mm').val())+':'+padzero($('#tc_in_'+id+'_ss').val()));
  var t = parseInt($('#tc_in_'+id+'_hh').val(), 10)*60*60 + parseInt($('#tc_in_'+id+'_mm').val(), 10)*60 + parseInt($('#tc_in_'+id+'_ss').val(), 10) + 10;
  var hh = Math.floor(t / 60 / 60);
  t = t - hh*60*60;
  var mm = Math.floor(t / 60);
  t = t - mm*60;
  var ss = t;
  $('#tc_out_'+id.toString()+'_hh').val(padzero(hh));
  $('#tc_out_'+id.toString()+'_mm').val(padzero(mm));
  $('#tc_out_'+id.toString()+'_ss').val(padzero(ss));
}

// Temporary replacement for some forms
function postForm(postVars, target) {
  checkInitSettingsObj();
  for (var v in window.settingsObj) {
    postVars[v] = window.settingsObj[v];
  }
  var postVarsAsInputs = "";
  for (var key in postVars) {
    postVarsAsInputs += '<input type="hidden" name="' + key + '" value="' + postVars[key] + '">';
  }
  var randomString = "jsPostForm" + Math.floor(Math.random()*999999999999);// avoids problems when sending the same form twice such as when posting a form, going back, then posting another form
  // Create a form with data from the settings object
  target = (typeof target == "undefined")?'':' target="'+target+'" ';
  $('body').append('<form id="'+randomString+'" '+target+' action="." method="POST">' + postVarsAsInputs + '</form>');
  $('#'+randomString).submit();
}
function gotoTapeThumbnails(movieId, target) {
  var postVars = {
    "movie_numb" : movieId,
    "menu_numb" : 101,
    "menu_lev" : 60,
    "view_logged" : 0
  };
  postForm(postVars, target);
}
function getGotoTapeLogsPostVars(movieId) {
  return {
    "movie_numb" : movieId,
    "menu_numb" : 101,
    "menu_lev" : 60,
    "view_logged" : 1,
    "view_log_descriptions" : 1,
    "display_thumbs" : 1,
    "clipspp_numb" : 50,
    "add_logs_to_clips" : 0
  };
}
function gotoTapeLogs(movieId, target) {
  var postVars = getGotoTapeLogsPostVars(movieId);
  postVars["no_edit_clip_fields"] = 0;
  postForm(postVars, target);
}
function gotoTapeLogsWithoutEditingFields(movieId, target) {
  var postVars2 = getGotoTapeLogsPostVars(movieId);
  postVars2["no_edit_clip_fields"] = 1;
  postForm(postVars2, target);
}

///////////////////////////////////////////////////
// jquery plugin code
///////////////////////////////////////////////////

/*!
 * jQuery blockUI plugin
 * Version 2.35 (23-SEP-2010)
 * @requires jQuery v1.2.3 or later
 *
 * Examples at: http://malsup.com/jquery/block/
 * Copyright (c) 2007-2008 M. Alsup
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Thanks to Amir-Hossein Sobhi for some excellent contributions!
 */

;
(function($) {

if (/1\.(0|1|2)\.(0|1|2)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery)) {
	alert('blockUI requires jQuery v1.2.3 or later!  You are using v' + $.fn.jquery);
	return;
}

$.fn._fadeIn = $.fn.fadeIn;

var noOp = function() {};

// this bit is to ensure we don't call setExpression when we shouldn't (with extra muscle to handle
// retarded userAgent strings on Vista)
var mode = document.documentMode || 0;
var setExpr = $.browser.msie && (($.browser.version < 8 && !mode) || mode < 8);
var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent) && !mode;

// global $ methods for blocking/unblocking the entire page
  $.blockUI   = function(opts) {
    install(window, opts);
  };
  $.unblockUI = function(opts) {
    remove(window, opts);
  };

// convenience method for quick growl-like notifications  (http://www.google.com/search?q=growl)
$.growlUI = function(title, message, timeout, onClose) {
	var $m = $('<div class="growlUI"></div>');
	if (title) $m.append('<h1>'+title+'</h1>');
	if (message) $m.append('<h2>'+message+'</h2>');
	if (timeout == undefined) timeout = 3000;
	$.blockUI({
      message: $m,
      fadeIn: 700,
      fadeOut: 1000,
      centerY: false,
      timeout: timeout,
      showOverlay: false,
		onUnblock: onClose,
		css: $.blockUI.defaults.growlCSS
	});
};

// plugin method for blocking element content
$.fn.block = function(opts) {
    return this.unblock({
      fadeOut: 0
    }).each(function() {
		if ($.css(this,'position') == 'static')
			this.style.position = 'relative';
		if ($.browser.msie)
			this.style.zoom = 1; // force 'hasLayout'
		install(this, opts);
	});
};

// plugin method for unblocking element content
$.fn.unblock = function(opts) {
	return this.each(function() {
		remove(this, opts);
	});
};

$.blockUI.version = 2.35; // 2nd generation blocking at no extra cost!

// override these in your code to change the default behavior and style
$.blockUI.defaults = {
	// message displayed when blocking (use null for no message)
	message:  '<h1>Please wait...</h1>',

	title: null,	  // title string; only used when theme == true
	draggable: true,  // only used when theme == true (requires jquery-ui.js to be loaded)

	theme: false, // set to true to use with jQuery UI themes

	// styles for the message when blocking; if you wish to disable
	// these and use an external stylesheet then do this in your code:
	// $.blockUI.defaults.css = {};
	css: {
		padding:	0,
		margin:		0,
		width:		'30%',
		top:		'40%',
		left:		'35%',
		textAlign:	'center',
		color:		'#000',
		border:		'3px solid #aaa',
		backgroundColor:'#fff',
      cursor:		'auto'
	},

	// minimal style set used when themes are used
	themedCSS: {
		width:	'30%',
		top:	'40%',
		left:	'35%'
	},

	// styles for the overlay
	overlayCSS:  {
		backgroundColor: '#000',
		opacity:	  	 0.6,
      cursor:		  	 'auto'
	},

	// styles applied when using $.growlUI
	growlCSS: {
		width:  	'350px',
		top:		'10px',
		left:   	'',
		right:  	'10px',
		border: 	'none',
		padding:	'5px',
		opacity:	0.6,
		cursor: 	'default',
		color:		'#fff',
		backgroundColor: '#000',
		'-webkit-border-radius': '10px',
		'-moz-border-radius':	 '10px',
		'border-radius': 		 '10px'
	},

	// IE issues: 'about:blank' fails on HTTPS and javascript:false is s-l-o-w
	// (hat tip to Jorge H. N. de Vasconcelos)
	iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank',

	// force usage of iframe in non-IE browsers (handy for blocking applets)
	forceIframe: false,

	// z-index for the blocking overlay
	baseZ: 1000,

	// set these to true to have the message automatically centered
	centerX: true, // <-- only effects element blocking (page block controlled via css above)
	centerY: true,

	// allow body element to be stetched in ie6; this makes blocking look better
	// on "short" pages.  disable if you wish to prevent changes to the body height
	allowBodyStretch: true,

	// enable if you want key and mouse events to be disabled for content that is blocked
	bindEvents: true,

	// be default blockUI will supress tab navigation from leaving blocking content
	// (if bindEvents is true)
	constrainTabKey: true,

	// fadeIn time in millis; set to 0 to disable fadeIn on block
	fadeIn:  200,

	// fadeOut time in millis; set to 0 to disable fadeOut on unblock
	fadeOut:  400,

	// time in millis to wait before auto-unblocking; set to 0 to disable auto-unblock
	timeout: 0,

	// disable if you don't want to show the overlay
	showOverlay: true,

	// if true, focus will be placed in the first available input field when
	// page blocking
	focusInput: true,

	// suppresses the use of overlay styles on FF/Linux (due to performance issues with opacity)
	applyPlatformOpacityRules: true,

	// callback method invoked when fadeIn has completed and blocking message is visible
	onBlock: null,

	// callback method invoked when unblocking has completed; the callback is
	// passed the element that has been unblocked (which is the window object for page
	// blocks) and the options that were passed to the unblock call:
	//	 onUnblock(element, options)
	onUnblock: null,

	// don't ask; if you really must know: http://groups.google.com/group/jquery-en/browse_thread/thread/36640a8730503595/2f6a79a77a78e493#2f6a79a77a78e493
	quirksmodeOffsetHack: 4,

	// class name of the message block
	blockMsgClass: 'blockMsg'
};

// private data and functions follow...

var pageBlock = null;
var pageBlockEls = [];

function install(el, opts) {
	var full = (el == window);
	var msg = opts && opts.message !== undefined ? opts.message : undefined;
	opts = $.extend({}, $.blockUI.defaults, opts || {});
	opts.overlayCSS = $.extend({}, $.blockUI.defaults.overlayCSS, opts.overlayCSS || {});
	var css = $.extend({}, $.blockUI.defaults.css, opts.css || {});
	var themedCSS = $.extend({}, $.blockUI.defaults.themedCSS, opts.themedCSS || {});
	msg = msg === undefined ? opts.message : msg;

	// remove the current block (if there is one)
	if (full && pageBlock)
      remove(window, {
        fadeOut:0
      });

	// if an existing element is being used as the blocking content then we capture
	// its current place in the DOM (and current display style) so we can restore
	// it when we unblock
	if (msg && typeof msg != 'string' && (msg.parentNode || msg.jquery)) {
		var node = msg.jquery ? msg[0] : msg;
		var data = {};
		$(el).data('blockUI.history', data);
		data.el = node;
		data.parent = node.parentNode;
		data.display = node.style.display;
		data.position = node.style.position;
		if (data.parent)
			data.parent.removeChild(node);
	}

	var z = opts.baseZ;

	// blockUI uses 3 layers for blocking, for simplicity they are all used on every platform;
	// layer1 is the iframe layer which is used to supress bleed through of underlying content
	// layer2 is the overlay layer which has opacity and a wait cursor (by default)
	// layer3 is the message content that is displayed while blocking

	var lyr1 = ($.browser.msie || opts.forceIframe)
		? $('<iframe class="blockUI" style="z-index:'+ (z++) +';display:none;border:none;margin:0;padding:0;position:absolute;width:100%;height:100%;top:0;left:0" src="'+opts.iframeSrc+'"></iframe>')
		: $('<div class="blockUI" style="display:none"></div>');
	var lyr2 = $('<div class="blockUI blockOverlay" style="z-index:'+ (z++) +';display:none;border:none;margin:0;padding:0;width:100%;height:100%;top:0;left:0"></div>');

	var lyr3, s;
	if (opts.theme && full) {
		s = '<div class="blockUI ' + opts.blockMsgClass + ' blockPage ui-dialog ui-widget ui-corner-all" style="z-index:'+z+';display:none;position:fixed">' +
				'<div class="ui-widget-header ui-dialog-titlebar blockTitle">'+(opts.title || '&nbsp;')+'</div>' +
				'<div class="ui-widget-content ui-dialog-content"></div>' +
			'</div>';
	}
	else if (opts.theme) {
		s = '<div class="blockUI ' + opts.blockMsgClass + ' blockElement ui-dialog ui-widget ui-corner-all" style="z-index:'+z+';display:none;position:absolute">' +
				'<div class="ui-widget-header ui-dialog-titlebar blockTitle">'+(opts.title || '&nbsp;')+'</div>' +
				'<div class="ui-widget-content ui-dialog-content"></div>' +
			'</div>';
	}
	else if (full) {
		s = '<div class="blockUI ' + opts.blockMsgClass + ' blockPage" style="z-index:'+z+';display:none;position:fixed"></div>';
	}
	else {
		s = '<div class="blockUI ' + opts.blockMsgClass + ' blockElement" style="z-index:'+z+';display:none;position:absolute"></div>';
	}
	lyr3 = $(s);

	// if we have a message, style it
	if (msg) {
		if (opts.theme) {
			lyr3.css(themedCSS);
			lyr3.addClass('ui-widget-content');
		}
		else
			lyr3.css(css);
	}

	// style the overlay
	if (!opts.applyPlatformOpacityRules || !($.browser.mozilla && /Linux/.test(navigator.platform)))
		lyr2.css(opts.overlayCSS);
	lyr2.css('position', full ? 'fixed' : 'absolute');

	// make iframe layer transparent in IE
	if ($.browser.msie || opts.forceIframe)
		lyr1.css('opacity',0.0);

	//$([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el);
	var layers = [lyr1,lyr2,lyr3], $par = full ? $('body') : $(el);
	$.each(layers, function() {
		this.appendTo($par);
	});

	if (opts.theme && opts.draggable && $.fn.draggable) {
		lyr3.draggable({
			handle: '.ui-dialog-titlebar',
			cancel: 'li'
		});
	}

	// ie7 must use absolute positioning in quirks mode and to account for activex issues (when scrolling)
	var expr = setExpr && (!$.boxModel || $('object,embed', full ? null : el).length > 0);
	if (ie6 || expr) {
		// give body 100% height
		if (full && opts.allowBodyStretch && $.boxModel)
			$('html,body').css('height','100%');

		// fix ie6 issue when blocked element has a border width
		if ((ie6 || !$.boxModel) && !full) {
			var t = sz(el,'borderTopWidth'), l = sz(el,'borderLeftWidth');
			var fixT = t ? '(0 - '+t+')' : 0;
			var fixL = l ? '(0 - '+l+')' : 0;
		}

		// simulate fixed position
		$.each([lyr1,lyr2,lyr3], function(i,o) {
			var s = o[0].style;
			s.position = 'absolute';
			if (i < 2) {
				full ? s.setExpression('height','Math.max(document.body.scrollHeight, document.body.offsetHeight) - (jQuery.boxModel?0:'+opts.quirksmodeOffsetHack+') + "px"')
					 : s.setExpression('height','this.parentNode.offsetHeight + "px"');
				full ? s.setExpression('width','jQuery.boxModel && document.documentElement.clientWidth || document.body.clientWidth + "px"')
					 : s.setExpression('width','this.parentNode.offsetWidth + "px"');
				if (fixL) s.setExpression('left', fixL);
				if (fixT) s.setExpression('top', fixT);
			}
			else if (opts.centerY) {
				if (full) s.setExpression('top','(document.documentElement.clientHeight || document.body.clientHeight) / 2 - (this.offsetHeight / 2) + (blah = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"');
				s.marginTop = 0;
			}
			else if (!opts.centerY && full) {
				var top = (opts.css && opts.css.top) ? parseInt(opts.css.top) : 0;
				var expression = '((document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + '+top+') + "px"';
				s.setExpression('top',expression);
			}
		});
	}

	// show the message
	if (msg) {
		if (opts.theme)
			lyr3.find('.ui-widget-content').append(msg);
		else
			lyr3.append(msg);
		if (msg.jquery || msg.nodeType)
			$(msg).show();
	}

	if (($.browser.msie || opts.forceIframe) && opts.showOverlay)
		lyr1.show(); // opacity is zero
	if (opts.fadeIn) {
		var cb = opts.onBlock ? opts.onBlock : noOp;
		var cb1 = (opts.showOverlay && !msg) ? cb : noOp;
		var cb2 = msg ? cb : noOp;
		if (opts.showOverlay)
			lyr2._fadeIn(opts.fadeIn, cb1);
		if (msg)
			lyr3._fadeIn(opts.fadeIn, cb2);
	}
	else {
		if (opts.showOverlay)
			lyr2.show();
		if (msg)
			lyr3.show();
		if (opts.onBlock)
			opts.onBlock();
	}

	// bind key and mouse events
	bind(1, el, opts);

	if (full) {
		pageBlock = lyr3[0];
		pageBlockEls = $(':input:enabled:visible',pageBlock);
		if (opts.focusInput)
			setTimeout(focus, 20);
	}
	else
		center(lyr3[0], opts.centerX, opts.centerY);

	if (opts.timeout) {
		// auto-unblock
		var to = setTimeout(function() {
			full ? $.unblockUI(opts) : $(el).unblock(opts);
		}, opts.timeout);
		$(el).data('blockUI.timeout', to);
	}
};

// remove the block
function remove(el, opts) {
	var full = (el == window);
	var $el = $(el);
	var data = $el.data('blockUI.history');
	var to = $el.data('blockUI.timeout');
	if (to) {
		clearTimeout(to);
		$el.removeData('blockUI.timeout');
	}
	opts = $.extend({}, $.blockUI.defaults, opts || {});
	bind(0, el, opts); // unbind events

	var els;
	if (full) // crazy selector to handle odd field errors in ie6/7
		els = $('body').children().filter('.blockUI').add('body > .blockUI');
	else
		els = $('.blockUI', el);

	if (full)
		pageBlock = pageBlockEls = null;

	if (opts.fadeOut) {
		els.fadeOut(opts.fadeOut);
      setTimeout(function() {
        reset(els,data,opts,el);
      }, opts.fadeOut);
	}
	else
		reset(els, data, opts, el);
};

// move blocking element back into the DOM where it started
function reset(els,data,opts,el) {
	els.each(function(i,o) {
		// remove via DOM calls so we don't lose event handlers
		if (this.parentNode)
			this.parentNode.removeChild(this);
	});

	if (data && data.el) {
		data.el.style.display = data.display;
		data.el.style.position = data.position;
		if (data.parent)
			data.parent.appendChild(data.el);
		$(el).removeData('blockUI.history');
	}

	if (typeof opts.onUnblock == 'function')
		opts.onUnblock(el,opts);
};

// bind/unbind the handler
function bind(b, el, opts) {
	var full = el == window, $el = $(el);

	// don't bother unbinding if there is nothing to unbind
	if (!b && (full && !pageBlock || !full && !$el.data('blockUI.isBlocked')))
		return;
	if (!full)
		$el.data('blockUI.isBlocked', b);

	// don't bind events when overlay is not in use or if bindEvents is false
	if (!opts.bindEvents || (b && !opts.showOverlay))
		return;

	// bind anchors and inputs for mouse and key events
	var events = 'mousedown mouseup keydown keypress';
	b ? $(document).bind(events, opts, handler) : $(document).unbind(events, handler);

// former impl...
//	   var $e = $('a,:input');
//	   b ? $e.bind(events, opts, handler) : $e.unbind(events, handler);
};

// event handler to suppress keyboard/mouse events when blocking
function handler(e) {
	// allow tab navigation (conditionally)
	if (e.keyCode && e.keyCode == 9) {
		if (pageBlock && e.data.constrainTabKey) {
			var els = pageBlockEls;
			var fwd = !e.shiftKey && e.target == els[els.length-1];
			var back = e.shiftKey && e.target == els[0];
			if (fwd || back) {
          setTimeout(function(){
            focus(back)
            },10);
				return false;
			}
		}
	}
	var opts = e.data;
	// allow events within the message content
	if ($(e.target).parents('div.' + opts.blockMsgClass).length > 0)
		return true;

	// allow events for content that is not being blocked
	return $(e.target).parents().children().filter('div.blockUI').length == 0;
};

function focus(back) {
	if (!pageBlockEls)
		return;
	var e = pageBlockEls[back===true ? pageBlockEls.length-1 : 0];
	if (e)
		e.focus();
};

function center(el, x, y) {
	var p = el.parentNode, s = el.style;
	var l = ((p.offsetWidth - el.offsetWidth)/2) - sz(p,'borderLeftWidth');
	var t = ((p.offsetHeight - el.offsetHeight)/2) - sz(p,'borderTopWidth');
	if (x) s.left = l > 0 ? (l+'px') : '0';
	if (y) s.top  = t > 0 ? (t+'px') : '0';
};

function sz(el, p) {
	return parseInt($.css(el,p))||0;
};

})(jQuery);