/*!
* jQuery corner plugin: simple corner rounding
* Examples and documentation at: http://jquery.malsup.com/corner/
* version 1.99 (28-JUL-2009)
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*/
 
/**
* corner() takes a single string argument: $('#myDiv').corner("effect corners width")
*
* effect: name of the effect to apply, such as round, bevel, notch, bite, etc (default is round).
* corners: one or more of: top, bottom, tr, tl, br, or bl.
* by default, all four corners are adorned.
* width: width of the effect; in the case of rounded corners this is the radius.
* specify this value using the px suffix such as 10px (and yes, it must be pixels).
*
* @name corner
* @type jQuery
* @param String options Options which control the corner style
* @cat Plugins/Corner
* @return jQuery
* @author Dave Methvin (http://methvin.com/jquery/jq-corner.html)
* @author Mike Alsup (http://jquery.malsup.com/corner/)
*/
;(function($) {
 
var expr = (function() {
if (! $.browser.msie) return false;
    var div = document.createElement('div');
    try { div.style.setExpression('width','0+0'); }
    catch(e) { return false; }
    return true;
})();
    
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 == 'rgba(0, 0, 0, 0)')
            continue; // webkit
        if (v.indexOf('rgb') >= 0) {
            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 getWidth(fx, i, width) {
    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;
    }
};
 
$.fn.corner = function(o) {
    // in 1.3+ we can fix mistakes with the ready state
if (this.length == 0) {
        if (!$.isReady && this.selector) {
            var s = this.selector, c = this.context;
            $(function() {
                $(s,c).corner(o);
            });
        }
        return this;
}
 
    o = (o||"").toLowerCase();
    var keep = /keep/.test(o); // keep borders?
    var cc = ((o.match(/cc:(#[0-9a-f]+)/)||[])[1]); // corner color
    var sc = ((o.match(/sc:(#[0-9a-f]+)/)||[])[1]); // strip color
    var width = parseInt((o.match(/(\d+)px/)||[])[1]) || 10; // corner width
    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 (typeof this.style.zoom != undefined) this.style.zoom = 1; // force 'hasLayout' in IE
        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];
            // only add stips if needed
            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 (expr)
                        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';
                    
                    // fix ie6 problem when blocked element has a border width
                    if (expr) {
                        var bw = sz(this,'borderLeftWidth') + sz(this,'borderRightWidth');
                        ds.setExpression('width', 'this.parentNode.offsetWidth - '+bw+'+ "px"');
                    }
                    else
                        ds.width = '100%';
                }
                else {
                 ds.position = 'relative';
                    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,getWidth(fx,i, width));
                    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() {
$('div.jquery-corner', this).remove();
return this;
};
    
})(jQuery);