/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-12-20 08:46:55 -0600 (Thu, 20 Dec 2007) $
 * $Rev: 4259 $
 *
 * Version: 1.2
 *
 * Requires: jQuery 1.2+
 */

( function($) {

	$.dimensions = {
		version :'1.2'
	};

	// Create innerHeight, innerWidth, outerHeight and outerWidth methods
	$.each( [ 'Height', 'Width' ], function(i, name) {

		// innerHeight and innerWidth
			$.fn['inner' + name] = function() {
				if (!this[0])
					return;

				var torl = name == 'Height' ? 'Top' : 'Left', // top or left
				borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or
																// right

				return this.is(':visible') ? this[0]['client' + name] : num(
						this, name.toLowerCase())
						+ num(this, 'padding' + torl)
						+ num(this, 'padding' + borr);
			};

			// outerHeight and outerWidth
			$.fn['outer' + name] = function(options) {
				if (!this[0])
					return;

				var torl = name == 'Height' ? 'Top' : 'Left', // top or left
				borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or
																// right

				options = $.extend( {
					margin :false
				}, options || {});

				var val = this.is(':visible') ? this[0]['offset' + name] : num(
						this, name.toLowerCase())
						+ num(this, 'border' + torl + 'Width')
						+ num(this, 'border' + borr + 'Width')
						+ num(this, 'padding' + torl)
						+ num(this, 'padding' + borr);

				return val
						+ (options.margin ? (num(this, 'margin' + torl) + num(
								this, 'margin' + borr)) : 0);
			};
		});

	// Create scrollLeft and scrollTop methods
	$
			.each(
					[ 'Left', 'Top' ],
					function(i, name) {
						$.fn['scroll' + name] = function(val) {
							if (!this[0])
								return;

							return val != undefined ?

							// Set the scroll offset
							this
									.each( function() {
										this == window || this == document ? window
												.scrollTo(
														name == 'Left' ? val
																: $(window)['scrollLeft']
																		(),
														name == 'Top' ? val
																: $(window)['scrollTop']
																		())
												: this['scroll' + name] = val;
									})
									:

									// Return the scroll offset
									this[0] == window || this[0] == document ? self[(name == 'Left' ? 'pageXOffset'
											: 'pageYOffset')]
											|| $.boxModel
											&& document.documentElement['scroll' + name]
											|| document.body['scroll' + name]
											: this[0]['scroll' + name];
						};
					});

	$.fn
			.extend( {
				position : function() {
					var left = 0, top = 0, elem = this[0], offset, parentOffset, offsetParent, results;

					if (elem) {
						// Get *real* offsetParent
						offsetParent = this.offsetParent();

						// Get correct offsets
						offset = this.offset();
						parentOffset = offsetParent.offset();

						// Subtract element margins
						offset.top -= num(elem, 'marginTop');
						offset.left -= num(elem, 'marginLeft');

						// Add offsetParent borders
						parentOffset.top += num(offsetParent, 'borderTopWidth');
						parentOffset.left += num(offsetParent,
								'borderLeftWidth');

						// Subtract the two offsets
						results = {
							top :offset.top - parentOffset.top,
							left :offset.left - parentOffset.left
						};
					}

					return results;
				},

				offsetParent : function() {
					var offsetParent = this[0].offsetParent;
					while (offsetParent
							&& (!/^body|html$/i.test(offsetParent.tagName) && $
									.css(offsetParent, 'position') == 'static'))
						offsetParent = offsetParent.offsetParent;
					return $(offsetParent);
				}
			});

	$.fn.vCenter = function(options) {
		var pos = {
			sTop : function() {
				return window.pageYOffset || $.boxModel
						&& document.documentElement.scrollTop
						|| document.body.scrollTop
			},
			wHeight : function() {
				if ($.browser.opera) {
					return window.innerHeight
							- (($(document).height() > window.innerHeight) ? getScrollbarWidth()
									: 0)
				} else if ($.browser.safari) {
					return window.innerHeight
				} else {
					return $.boxModel && document.documentElement.clientHeight
							|| document.body.clientHeight
				}
			}
		};
		return this.each( function(index) {
			if (index == 0) {
				var $this = $(this);
				var elHeight = $this.height();
				$this.css( {
					position :'absolute',
					marginTop :'0',
					top :pos.sTop() + (pos.wHeight() / 2) - (elHeight / 2)
				})
			}
		})
	};
	$.fn.hCenter = function(options) {
		var pos = {
			sLeft : function() {
				return window.pageXOffset || $.boxModel
						&& document.documentElement.scrollLeft
						|| document.body.scrollLeft
			},
			wWidth : function() {
				if ($.browser.opera) {
					return window.innerWidth - (($(document).width() > window.innerWidth) ? getScrollbarWidth()	: 0)
				} else if ($.browser.safari) {
					return window.innerWidth
				} else {
					return $.boxModel && document.documentElement.clientWidth || document.body.clientWidth
				}
			}
		};
		return this.each( function(index) {
			if (index == 0) {
				var $this = $(this);
				var elWidth = $this.width();
				$this.css( {
					position :'absolute',
					marginLeft :'0',
					left :pos.sLeft() + (pos.wWidth() / 2) - (elWidth / 2)
				})
			}
		})
	};
	$.fn.vhCenter = function(options) {
		$(this).vCenter();
		$(this).hCenter();
		$(this).css('z-index', '99')
	};

	function num(el, prop) {
		return parseInt($.curCSS(el.jquery ? el[0] : el, prop, true)) || 0;
	}
	;

})(jQuery);