/**

 * Interface Elements for jQuery

 * utility function

 *

 * http://interface.eyecon.ro

 *

 * Copyright (c) 2006 Stefan Petre

 * Dual licensed under the MIT (MIT-LICENSE.txt)

 * and GPL (GPL-LICENSE.txt) licenses.

 *

 *

 */

jQuery.iUtil = {

	getPosition : function(e)

	{

		var x = 0;

		var y = 0;

		var es = e.style;

		var restoreStyles = false;

		if (jQuery(e).css('display') == 'none') {

			var oldVisibility = es.visibility;

			var oldPosition = es.position;

			restoreStyles = true;

			es.visibility = 'hidden';

			es.display = 'block';

			es.position = 'absolute';

		}

		var el = e;

		while (el){

			x += el.offsetLeft + (el.currentStyle && !jQuery.browser.opera ?parseInt(el.currentStyle.borderLeftWidth)||0:0);

			y += el.offsetTop + (el.currentStyle && !jQuery.browser.opera ?parseInt(el.currentStyle.borderTopWidth)||0:0);

			el = el.offsetParent;

		}

		el = e;

		while (el && el.tagName  && el.tagName.toLowerCase() != 'body')

		{

			x -= el.scrollLeft||0;

			y -= el.scrollTop||0;

			el = el.parentNode;

		}

		if (restoreStyles == true) {

			es.display = 'none';

			es.position = oldPosition;

			es.visibility = oldVisibility;

		}

		return {x:x, y:y};

	},

	getPositionLite : function(el)

	{

		var x = 0, y = 0;

		while(el) {

			x += el.offsetLeft || 0;

			y += el.offsetTop || 0;

			el = el.offsetParent;

		}

		return {x:x, y:y};

	},

	getSize : function(e)

	{

		var w = jQuery.css(e,'width');

		var h = jQuery.css(e,'height');

		var wb = 0;

		var hb = 0;

		var es = e.style;

		if (jQuery(e).css('display') != 'none') {

			wb = e.offsetWidth;

			hb = e.offsetHeight;

		} else {

			var oldVisibility = es.visibility;

			var oldPosition = es.position;

			es.visibility = 'hidden';

			es.display = 'block';

			es.position = 'absolute';

			wb = e.offsetWidth;

			hb = e.offsetHeight;

			es.display = 'none';

			es.position = oldPosition;

			es.visibility = oldVisibility;

		}

		return {w:w, h:h, wb:wb, hb:hb};

	},

	getSizeLite : function(el)

	{

		return {

			wb:el.offsetWidth||0,

			hb:el.offsetHeight||0

		};

	},

	getClient : function(e)

	{

		var h, w, de;

		if (e) {

			w = e.clientWidth;

			h = e.clientHeight;

		} else {

			de = document.documentElement;

			w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;

			h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;

		}

		return {w:w,h:h};

	},

	getScroll : function (e)

	{

		var t=0, l=0, w=0, h=0, iw=0, ih=0;

		if (e && e.nodeName.toLowerCase() != 'body') {

			t = e.scrollTop;

			l = e.scrollLeft;

			w = e.scrollWidth;

			h = e.scrollHeight;

			iw = 0;

			ih = 0;

		} else  {

			if (document.documentElement) {

				t = document.documentElement.scrollTop;

				l = document.documentElement.scrollLeft;

				w = document.documentElement.scrollWidth;

				h = document.documentElement.scrollHeight;

			} else if (document.body) {

				t = document.body.scrollTop;

				l = document.body.scrollLeft;

				w = document.body.scrollWidth;

				h = document.body.scrollHeight;

			}

			iw = self.innerWidth||document.documentElement.clientWidth||document.body.clientWidth||0;

			ih = self.innerHeight||document.documentElement.clientHeight||document.body.clientHeight||0;

		}

		return { t: t, l: l, w: w, h: h, iw: iw, ih: ih };

	},

	getMargins : function(e, toInteger)

	{

		var el = jQuery(e);

		var t = el.css('marginTop') || '';

		var r = el.css('marginRight') || '';

		var b = el.css('marginBottom') || '';

		var l = el.css('marginLeft') || '';

		if (toInteger)

			return {

				t: parseInt(t)||0,

				r: parseInt(r)||0,

				b: parseInt(b)||0,

				l: parseInt(l)

			};

		else

			return {t: t, r: r,	b: b, l: l};

	},

	getPadding : function(e, toInteger)

	{

		var el = jQuery(e);

		var t = el.css('paddingTop') || '';

		var r = el.css('paddingRight') || '';

		var b = el.css('paddingBottom') || '';

		var l = el.css('paddingLeft') || '';

		if (toInteger)

			return {

				t: parseInt(t)||0,

				r: parseInt(r)||0,

				b: parseInt(b)||0,

				l: parseInt(l)

			};

		else

			return {t: t, r: r,	b: b, l: l};

	},

	getBorder : function(e, toInteger)

	{

		var el = jQuery(e);

		var t = el.css('borderTopWidth') || '';

		var r = el.css('borderRightWidth') || '';

		var b = el.css('borderBottomWidth') || '';

		var l = el.css('borderLeftWidth') || '';

		if (toInteger)

			return {

				t: parseInt(t)||0,

				r: parseInt(r)||0,

				b: parseInt(b)||0,

				l: parseInt(l)||0

			};

		else

			return {t: t, r: r,	b: b, l: l};

	},

	getPointer : function(event)

	{

		var x = event.pageX || (event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft)) || 0;

		var y = event.pageY || (event.clientY + (document.documentElement.scrollTop || document.body.scrollTop)) || 0;

		return {x:x, y:y};

	},

	traverseDOM : function(nodeEl, func)

	{

		func(nodeEl);

		nodeEl = nodeEl.firstChild;

		while(nodeEl){

			jQuery.iUtil.traverseDOM(nodeEl, func);

			nodeEl = nodeEl.nextSibling;

		}

	},

	purgeEvents : function(nodeEl)

	{

		jQuery.iUtil.traverseDOM(

			nodeEl,

			function(el)

			{

				for(var attr in el){

					if(typeof el[attr] === 'function') {

						el[attr] = null;

					}

				}

			}

		);

	},

	centerEl : function(el, axis)

	{

		var clientScroll = jQuery.iUtil.getScroll();

		var windowSize = jQuery.iUtil.getSize(el);

		if (!axis || axis == 'vertically')

			jQuery(el).css(

				{

					top: clientScroll.t + ((Math.max(clientScroll.h,clientScroll.ih) - clientScroll.t - windowSize.hb)/2) + 'px'

				}

			);

		if (!axis || axis == 'horizontally')

			jQuery(el).css(

				{

					left:	clientScroll.l + ((Math.max(clientScroll.w,clientScroll.iw) - clientScroll.l - windowSize.wb)/2) + 'px'

				}

			);

	},

	fixPNG : function (el, emptyGIF) {

		var images = jQuery('img[@src*="png"]', el||document), png;

		images.each( function() {

			png = this.src;				

			this.src = emptyGIF;

			this.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + png + "')";

		});

	}

};

// Helper function to support older browsers!

[].indexOf || (Array.prototype.indexOf = function(v, n){

	n = (n == null) ? 0 : n;

	var m = this.length;

	for (var i=n; i<m; i++)

		if (this[i] == v)

			return i;

	return -1;

});