/*
 * jQuery blockUI plugin (http://malsup.com/jquery/block/)
 * Version 2.20 (19-MAY-2009)
 * @requires jQuery v1.2.3 or later
 *
 * Copyright (c) 2007-2009 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
 *
 */

;(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!  This website is using v' + $.fn.jquery);
		return;
	}
	
	$.fn._fadeIn = $.fn.fadeIn;
	
	var setExpr = (function()
	{
		if (!$.browser.msie) return false;
		var div = document.createElement('div');
		try { div.style.setExpression('width','0+0'); }
		catch(e) { return false; }
		return true;
	})();

	$.blockUI   = function(opts) { install(window, opts); };
	$.unblockUI = function(opts) { remove(window, opts); };
	
	$.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
		});
	};
	
	$.fn.block = function(opts)
	{
		return this.unblock({ fadeOut: 0 }).each(function()
		{
			if ($.css(this,'position') == 'static')
			{
				this.style.position = 'relative';
			}
			if ($.browser.msie)
			{
				this.style.zoom = 1;
			}
			install(this, opts);
		});
	};
	
	$.fn.unblock = function(opts)
	{
		return this.each(function()
		{
			remove(this, opts);
		});
	};
	
	$.blockUI.version = 2.20;
	
	$.blockUI.defaults = {
		message:  '<h1>Please wait...</h1>',
		css: {
			padding:        '18px',
			margin:         0,
			width:          '30%',
			top:            '40%',
			left:           '35%',
			textAlign:      'center',
			color:          '#000',
			border:         '3px solid #CF0072',
			backgroundColor:'#fff',
			cursor:         'wait'
		},
		overlayCSS: {
			backgroundColor: '#000',
			opacity:          0.75,
			cursor:          'wait'
		},
		growlCSS: {
			width:    '350px',
			top:      '10px',
			left:     '',
			right:    '10px',
			border:   'none',
			padding:  '5px',
			opacity:   0.6,
			cursor:    null,
			color:    '#fff',
			backgroundColor: '#000',
			'-webkit-border-radius': '10px',
			'-moz-border-radius':    '10px'
		},
		iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank',
		forceIframe: false,
		baseZ: 1000,
		centerX: true,
		centerY: true,
		allowBodyStretch: true,
		bindEvents: true,
		constrainTabKey: true,
		fadeIn:  200,
		fadeOut:  400,
		timeout: 0,
		showOverlay: true,
		focusInput: true,
		applyPlatformOpacityRules: true,
		onUnblock: null,
		quirksmodeOffsetHack: 4
	};
	
	var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent);
	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 || {});
		msg = msg === undefined ? opts.message : msg;
		
		if (full && pageBlock)
		{
			remove(window, {fadeOut:0});
		}
		
		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;
		
		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 = full ? $('<div class="blockUI blockMsg blockPage" style="z-index:'+z+';display:none;position:fixed"></div>') : $('<div class="blockUI blockMsg blockElement" style="z-index:'+z+';display:none;position:absolute"></div>');
		
		if (msg) lyr3.css(css);
		
		if (!opts.applyPlatformOpacityRules || !($.browser.mozilla && /Linux/.test(navigator.platform))) lyr2.css(opts.overlayCSS);
		lyr2.css('position', full ? 'fixed' : 'absolute');
		
		if ($.browser.msie || opts.forceIframe) lyr1.css('opacity',0.0);
		
		$([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el);
		
		var expr = $.browser.msie && ($.browser.version < 8 || !$.boxModel) && (!$.boxModel || $('object,embed', full ? null : el).length > 0);
		if (ie6 || (expr && setExpr))
		{
			if (full && opts.allowBodyStretch && $.boxModel) $('html,body').css('height','100%');
			
			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;
			}
			
			$.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);
				}
			});
		}
		
		if (msg)
		{
			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)
		{
			if (opts.showOverlay) lyr2._fadeIn(opts.fadeIn);
			if (msg) lyr3.fadeIn(opts.fadeIn);
		}
		else
		{
			if (opts.showOverlay) lyr2.show();
			if (msg) lyr3.show();
		}
		
		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)
		{
			var to = setTimeout(function() { full ? $.unblockUI(opts) : $(el).unblock(opts); }, opts.timeout);
			$(el).data('blockUI.timeout', to);
		}
	};
	
	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);
		var els = full ? $('body').children().filter('.blockUI') : $('.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);
		}
	};
	
	function reset(els,data,opts,el)
	{
		els.each(function(i,o)
		{
			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);
			$(data.el).removeData('blockUI.history');
		}
		
		if (typeof opts.onUnblock == 'function') opts.onUnblock(el,opts);
	};
	
	function bind(b, el, opts)
	{
		var full = el == window, $el = $(el);
		
		if (!b && (full && !pageBlock || !full && !$el.data('blockUI.isBlocked'))) return;
		if (!full) $el.data('blockUI.isBlocked', b);
		
		if (!opts.bindEvents || (b && !opts.showOverlay)) return;
		
		var events = 'mousedown mouseup keydown keypress';
		b ? $(document).bind(events, opts, handler) : $(document).unbind(events, handler);
	};
	
	function handler(e)
	{
		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;
				}
			}
		}
		if ($(e.target).parents('div.blockMsg').length > 0) return true;
		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);