/*! 
  * jQuery corner plugin: simple corner rounding 
  * Examples and documentation at: http://jquery.malsup.com/corner/ 
  * version 1.98 (02-JUN-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.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);