/*!

 * jQuery blockUI plugin

 * Version 2.33 (29-MAR-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 = 2.33; // 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:		'wait'

	},

	

	// 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:		  	 'wait'

	},



	// 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: 9000,



	// 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

};



// 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 blockMsg 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 blockMsg 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 blockMsg blockPage" style="z-index:'+z+';display:none;position:fixed"></div>';

	}			

	else {

		s = '<div class="blockUI blockMsg 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;

			}

		}

	}

	// allow events within the message content

	if ($(e.target).parents('div.blockMsg').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);