/*
 * jQuery blockUI plugin
 * Version 2.23 (21-JUN-2009)
 * @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;
	$.blockUI = function(opts) {install(window, opts);
	};
	$.unblockUI = function(opts) {remove(window, opts);
	};
	$.growlUI = function(title, message, timeout) {
		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,
			css : $.blockUI.defaults.growlCSS
		});
	};
	$.fn.block = function(opts) {
		return this.each(function() {
			if($.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 = 2.16;
	$.blockUI.defaults = {
		message : '<h1>Please wait...</h1>',
		css : {
			padding : 0,
			margin : 0,
			width : '30%',
			top : '40%',
			left : '35%',
			textAlign : 'center',
			color : '#000',
			border : '3px solid #aaa',
			backgroundColor : '#fff',
			cursor : 'wait'
		},
		overlayCSS : {
			backgroundColor : '#000',
			opacity : '0.6'
		},
		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'
		},
		baseZ : 1000,
		centerX : true,
		centerY : true,
		allowBodyStretch : 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) ? $('<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="about:blank"></iframe>') : $('<div class="blockUI" style="display:none"></div>');
		var lyr2 = $('<div class="blockUI blockOverlay" style="z-index:' + (z++) + ';display:none;cursor:wait;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)
			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 && lyr3[0].style.setExpression) {
			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.showOverlay)
			lyr1.show();
		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(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);