;(function($) { 

var style = document.createElement('div').style;
var moz = style['MozBorderRadius'] !== undefined;
var webkit = style['WebkitBorderRadius'] !== undefined;
var radius = style['borderRadius'] !== undefined || style['BorderRadius'] !== undefined;
var mode = document.documentMode || 0;
var noBottomFold = $.browser.msie && (($.browser.version < 8 && !mode) || mode < 8);

var expr = $.browser.msie && (function() {
 var div = document.createElement('div');
 try { div.style.setExpression('width','0+0'); div.style.removeExpression('width'); }
 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) {
 while(node) {
 var v = $.css(node,'backgroundColor');
 if (v && v != 'transparent' && v != 'rgba(0, 0, 0, 0)') {
  if (v.indexOf('rgb') >= 0) { 
  var rgb = v.match(/\d+/g); 
  return '#'+ hex2(rgb[0]) + hex2(rgb[1]) + hex2(rgb[2]);
  }
 return v;
  }
  if (node.nodeName.toLowerCase() == 'html')
 break;
  node = node.parentNode; // keep walking if transparent
 }
 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 'dogfold':
 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 'bevelfold':
 case 'bevel': return i+1;}
};

$.fn.corner = function(options) {
 // in 1.3+ we can fix mistakes with the ready state
 if (this.length == 0) {
 if (!$.isReady && this.selector) {
 var s = this.selector, c = this.context;
 $(function() {
 $(s,c).corner(options);});}
 return this;}

 return this.each(function(index){
  var $this = $(this);
  // meta values override options
  var o = [$this.attr($.fn.corner.defaults.metaAttr) || '', options || ''].join(' ').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|bevelfold|bevel|notch|bite|cool|sharp|slide|jut|curl|tear|fray|wicked|sculpt|long|dog3|dog2|dogfold|dog/;
  var fx = ((o.match(re)||['round'])[0]);
  var fold = /dogfold|bevelfold/.test(o);
  var edges = { T:0, B:1 };
  var opts = {
 TL: /top|tl|left/.test(o), TR: /top|tr|right/.test(o),
 BL: /bottom|bl|left/.test(o), BR: /bottom|br|right/.test(o)
  };
  if ( !opts.TL && !opts.TR && !opts.BL && !opts.BR )
 opts = { TL:1, TR:1, BL:1, BR:1 };
 
  // support native rounding
  if ($.fn.corner.defaults.useNative && fx == 'round' && (radius || moz || webkit) && !cc && !sc) {
 if (opts.TL)
 $this.css(radius ? 'border-top-left-radius' : moz ? '-moz-border-radius-topleft' : '-webkit-border-top-left-radius', width + 'px');
 if (opts.TR)
 $this.css(radius ? 'border-top-right-radius' : moz ? '-moz-border-radius-topright' : '-webkit-border-top-right-radius', width + 'px');
 if (opts.BL)
 $this.css(radius ? 'border-bottom-left-radius' : moz ? '-moz-border-radius-bottomleft' : '-webkit-border-bottom-left-radius', width + 'px');
 if (opts.BR)
 $this.css(radius ? 'border-bottom-right-radius' : moz ? '-moz-border-radius-bottomright' : '-webkit-border-bottom-right-radius', width + 'px');
 return;
  }
 
  var strip = document.createElement('div');
  $(strip).css({
 overflow: 'hidden',
 height: '1px',
 minHeight: '1px',
 fontSize: '1px',
 backgroundColor: sc || 'transparent',
 borderStyle: 'solid'
  });
 
 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 = $(this).outerHeight();

 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);}
 
 if (fold && $.support.boxModel) {
  if (bot && noBottomFold) continue;
  for (var c in opts) {
 if (!opts[c]) continue;
 if (bot && (c == 'TL' || c == 'TR')) continue;
 if (!bot && (c == 'BL' || c == 'BR')) continue;
 
 var common = { position: 'absolute', border: 'none', margin: 0, padding: 0, overflow: 'hidden', backgroundColor: strip.style.borderColor };
 var $horz = $('<div/>').css(common).css({ width: width + 'px', height: '1px' });
 switch(c) {
 case 'TL': $horz.css({ bottom: 0, left: 0 }); break;
 case 'TR': $horz.css({ bottom: 0, right: 0 }); break;
 case 'BL': $horz.css({ top: 0, left: 0 }); break;
 case 'BR': $horz.css({ top: 0, right: 0 }); break;}
 d.appendChild($horz[0]);
 
 var $vert = $('<div/>').css(common).css({ top: 0, bottom: 0, width: '1px', height: width + 'px' });
 switch(c) {
 case 'TL': $vert.css({ left: width }); break;
 case 'TR': $vert.css({ right: width }); break;
 case 'BL': $vert.css({ left: width }); break;
 case 'BR': $vert.css({ right: width }); break;}
 d.appendChild($vert[0]);
  }
 }
 }
 }
 });
};

$.fn.uncorner = function() { 
 if (radius || moz || webkit)
  this.css(radius ? 'border-radius' : moz ? '-moz-border-radius' : '-webkit-border-radius', 0);
 $('div.jquery-corner', this).remove();
 return this;
};

// expose options
$.fn.corner.defaults = {
 useNative: true, // true if plugin should attempt to use native browser support for border radius rounding
 metaAttr: 'data-corner' // name of meta attribute to use for options
};
 
})(jQuery);