/*
 * jQuery corner plugin
 *
 * version 1.92 (12/18/2007)
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * For more details see: http://methvin.com/jquery/jq-corner.html
 * For a full demo see:  http://malsup.com/jquery/corner/
 *
 */
(function($) {
    $.fn.corner = function(o) {
        var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent);
        function sz(el, p) {
            return parseInt($.css(el, p)) || 0
        };
        function hex2(s) {
            var s = parseInt(s).toString(16);
            return (s.length < 2) ? '0' + s: s
        };
        function gpc(node) {
            for (; node && node.nodeName.toLowerCase() != 'html'; node = node.parentNode) {
                var v = $.css(node, 'backgroundColor');
                if (v.indexOf('rgb') >= 0) {
                    if ($.browser.safari && v == 'rgba(0, 0, 0, 0)') continue;
                    var rgb = v.match(/\d+/g);
                    return '#' + hex2(rgb[0]) + hex2(rgb[1]) + hex2(rgb[2])
                }
                if (v && v != 'transparent') return v
            }
            return '#ffffff'
        };
        function getW(i) {
            switch (fx) {
            case 'round':
                return Math.round(width * (1 - Math.cos(Math.asin(i / width))));
            case 'cool':
                return Math.round(width * (1 + Math.cos(Math.asin(i / width))));
            case 'sharp':
                return Math.round(width * (1 - Math.cos(Math.acos(i / width))));
            case 'bite':
                return Math.round(width * (Math.cos(Math.asin((width - i - 1) / width))));
            case 'slide':
                return Math.round(width * (Math.atan2(i, width / i)));
            case 'jut':
                return Math.round(width * (Math.atan2(width, (width - i - 1))));
            case 'curl':
                return Math.round(width * (Math.atan(i)));
            case 'tear':
                return Math.round(width * (Math.cos(i)));
            case 'wicked':
                return Math.round(width * (Math.tan(i)));
            case 'long':
                return Math.round(width * (Math.sqrt(i)));
            case 'sculpt':
                return Math.round(width * (Math.log((width - i - 1), width)));
            case 'dog':
                return (i & 1) ? (i + 1) : width;
            case 'dog2':
                return (i & 2) ? (i + 1) : width;
            case 'dog3':
                return (i & 3) ? (i + 1) : width;
            case 'fray':
                return (i % 2) * width;
            case 'notch':
                return width;
            case 'bevel':
                return i + 1
            }
        };
        o = (o || "").toLowerCase();
        var keep = /keep/.test(o);
        var cc = ((o.match(/cc:(#[0-9a-f]+)/) || [])[1]);
        var sc = ((o.match(/sc:(#[0-9a-f]+)/) || [])[1]);
        var width = parseInt((o.match(/(\d+)px/) || [])[1]) || 10;
        var re = /round|bevel|notch|bite|cool|sharp|slide|jut|curl|tear|fray|wicked|sculpt|long|dog3|dog2|dog/;
        var fx = ((o.match(re) || ['round'])[0]);
        var edges = {
            T: 0,
            B: 1
        };
        var opts = {
            TL: /top|tl/.test(o),
            TR: /top|tr/.test(o),
            BL: /bottom|bl/.test(o),
            BR: /bottom|br/.test(o)
        };
        if (!opts.TL && !opts.TR && !opts.BL && !opts.BR) opts = {
            TL: 1,
            TR: 1,
            BL: 1,
            BR: 1
        };
        var strip = document.createElement('div');
        strip.style.overflow = 'hidden';
        strip.style.height = '1px';
        strip.style.backgroundColor = sc || 'transparent';
        strip.style.borderStyle = 'solid';
        return this.each(function(index) {
            var pad = {
                T: parseInt($.css(this, 'paddingTop')) || 0,
                R: parseInt($.css(this, 'paddingRight')) || 0,
                B: parseInt($.css(this, 'paddingBottom')) || 0,
                L: parseInt($.css(this, 'paddingLeft')) || 0
            };
            if ($.browser.msie) this.style.zoom = 1;
            if (!keep) this.style.border = 'none';
            strip.style.borderColor = cc || gpc(this.parentNode);
            var cssHeight = $.curCSS(this, 'height');
            for (var j in edges) {
                var bot = edges[j];
                if ((bot && (opts.BL || opts.BR)) || (!bot && (opts.TL || opts.TR))) {
                    strip.style.borderStyle = 'none ' + (opts[j + 'R'] ? 'solid': 'none') + ' none ' + (opts[j + 'L'] ? 'solid': 'none');
                    var d = document.createElement('div');
                    $(d).addClass('jquery-corner');
                    var ds = d.style;
                    bot ? this.appendChild(d) : this.insertBefore(d, this.firstChild);
                    if (bot && cssHeight != 'auto') {
                        if ($.css(this, 'position') == 'static') this.style.position = 'relative';
                        ds.position = 'absolute';
                        ds.bottom = ds.left = ds.padding = ds.margin = '0';
                        if ($.browser.msie) ds.setExpression('width', 'this.parentNode.offsetWidth');
                        else ds.width = '100%'
                    } else if (!bot && $.browser.msie) {
                        if ($.css(this, 'position') == 'static') this.style.position = 'relative';
                        ds.position = 'absolute';
                        ds.top = ds.left = ds.right = ds.padding = ds.margin = '0';
                        var bw = 0;
                        if (ie6 || !$.boxModel) bw = sz(this, 'borderLeftWidth') + sz(this, 'borderRightWidth');
                        ie6 ? ds.setExpression('width', 'this.parentNode.offsetWidth - ' + bw + '+ "px"') : ds.width = '100%'
                    } else {
                        ds.margin = !bot ? '-' + pad.T + 'px -' + pad.R + 'px ' + (pad.T - width) + 'px -' + pad.L + 'px': (pad.B - width) + 'px -' + pad.R + 'px -' + pad.B + 'px -' + pad.L + 'px'
                    }
                    for (var i = 0; i < width; i++) {
                        var w = Math.max(0, getW(i));
                        var e = strip.cloneNode(false);
                        e.style.borderWidth = '0 ' + (opts[j + 'R'] ? w: 0) + 'px 0 ' + (opts[j + 'L'] ? w: 0) + 'px';
                        bot ? d.appendChild(e) : d.insertBefore(e, d.firstChild)
                    }
                }
            }
        })
    };
    $.fn.uncorner = function(o) {
        return $('.jquery-corner', this).remove()
    }
})(jQuery);