/**
* 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;
});