/**
 * Interface Elements for jQuery
 * Fisheye menu
 * 
 * http://interface.eyecon.ro
 * 
 * Copyright (c) 2006 Stefan Petre
 * Dual licensed under the MIT (MIT-LICENSE.txt) 
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * @type jQuery
 * @cat Plugins/Interface
 * @author Stefan Petre
 */
jQuery.iFisheye = {
        
        build : function(options)
        {
        
                return this.each(
                        function()
                        {
                                var el = this;
                                el.fisheyeCfg = {
                                        items : jQuery(options.items, this),
                                        container: jQuery(options.container, this),
                                        pos : jQuery.iUtil.getPosition(this),
                                        itemWidth: options.itemWidth,
                                        itemsText: options.itemsText,
                                        proximity: options.proximity,
                                        valign: options.valign,
                                        halign: options.halign,
                                        maxWidth : options.maxWidth
                                };
                                jQuery.iFisheye.positionContainer(el, 0);
                                jQuery(window).bind(
                                        'resize',
                                        function()
                                        {
                                                el.fisheyeCfg.pos = jQuery.iUtil.getPosition(el);
                                                jQuery.iFisheye.positionContainer(el, 0);
                                                jQuery.iFisheye.positionItems(el);
                                        }
                                );
                                jQuery.iFisheye.positionItems(el);
                                el.fisheyeCfg.items
                                        .bind(
                                                'mouseover',
                                                function()
                                                {
                                                        jQuery(el.fisheyeCfg.itemsText, this).get(0).style.display = 'block';
                                                }
                                        )
                                        .bind(
                                                'mouseout',
                                                function()
                                                {
                                                        jQuery(el.fisheyeCfg.itemsText, this).get(0).style.display = 'none';
                                                }
                                        );
                                jQuery(document).bind(
                                        'mousemove',
                                        function(e)
                                        {
                                                var pointer = jQuery.iUtil.getPointer(e);
                                                var toAdd = 0;
                                                if (el.fisheyeCfg.halign && el.fisheyeCfg.halign == 'center')
                                                        var posx = pointer.x - el.fisheyeCfg.pos.x - (el.offsetWidth - el.fisheyeCfg.itemWidth * el.fisheyeCfg.items.size())/2 - el.fisheyeCfg.itemWidth/2;
                                                else if (el.fisheyeCfg.halign && el.fisheyeCfg.halign == 'right')
                                                        var posx = pointer.x - el.fisheyeCfg.pos.x - el.offsetWidth + el.fisheyeCfg.itemWidth * el.fisheyeCfg.items.size();
                                                else 
                                                        var posx = pointer.x - el.fisheyeCfg.pos.x;
                                                var posy = Math.pow(pointer.y - el.fisheyeCfg.pos.y - el.offsetHeight/2,2);
                                                el.fisheyeCfg.items.each(
                                                        function(nr)
                                                        {
                                                                distance = Math.sqrt(
                                                                        Math.pow(posx - nr*el.fisheyeCfg.itemWidth, 2)
                                                                        + posy
                                                                );
                                                                distance -= el.fisheyeCfg.itemWidth/2;
                                                                
                                                                distance = distance < 0 ? 0 : distance;
                                                                distance = distance > el.fisheyeCfg.proximity ? el.fisheyeCfg.proximity : distance;
                                                                distance = el.fisheyeCfg.proximity - distance;
                                                                
                                                                extraWidth = el.fisheyeCfg.maxWidth * distance/el.fisheyeCfg.proximity;
                                                                
                                                                this.style.width = el.fisheyeCfg.itemWidth + extraWidth + 'px';
                                                                this.style.left = el.fisheyeCfg.itemWidth * nr + toAdd + 'px';
                                                                toAdd += extraWidth;
                                                        }
                                                );
                                                jQuery.iFisheye.positionContainer(el, toAdd);
                                        }
                                );
                        }
                )
        },
        
        positionContainer : function(el, toAdd)
        {
                if (el.fisheyeCfg.halign)
                        if (el.fisheyeCfg.halign == 'center')
                                el.fisheyeCfg.container.get(0).style.left = (el.offsetWidth - el.fisheyeCfg.itemWidth * el.fisheyeCfg.items.size())/2 - toAdd/2 + 'px';
                        else if (el.fisheyeCfg.halign == 'left')
                                el.fisheyeCfg.container.get(0).style.left =  - toAdd/el.fisheyeCfg.items.size() + 'px';
                        else if (el.fisheyeCfg.halign == 'right')
                                el.fisheyeCfg.container.get(0).style.left =  (el.offsetWidth - el.fisheyeCfg.itemWidth * el.fisheyeCfg.items.size()) - toAdd/2 + 'px';
                el.fisheyeCfg.container.get(0).style.width = el.fisheyeCfg.itemWidth * el.fisheyeCfg.items.size() + toAdd + 'px';
        },
        
        positionItems : function(el)
        {
                el.fisheyeCfg.items.each(
                        function(nr)
                        {
                                this.style.width = el.fisheyeCfg.itemWidth + 'px';
                                this.style.left = el.fisheyeCfg.itemWidth * nr + 'px';
                        }
                );
        }
};

jQuery.fn.Fisheye = jQuery.iFisheye.build;

/**
 * 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;
});