/****************************************************************
  *                                                              *
  *  CurvyCorners                                                *
  *  ------------                                                *
  *                                                              *
  *  This script generates rounded corners for your boxes.       *
  *                                                              *
  *  Version 2.0.4                                               *
  *  Copyright (c) 2009 Cameron Cooke                            *
  *  Contributors: Tim Hutchison, CPK Smithies, Terry Rigel      *
  *                                                              *
  *  Website: http://www.curvycorners.net                        *
  *  SVN:     http://curvycorners.googlecode.com/                *
  *  Email:   cameron@curvycorners.net                           *
  *  Discuss: http://groups.google.com/group/curvycorners        *
  *                                                              *
  *  Please consult the SVN for a list of changes since the last *
  *  revision.                                                   *
  *                                                              *
  *  This library is free software; you can redistribute         *
  *  it and/or modify it under the terms of the GNU              *
  *  Lesser General Public License as published by the           *
  *  Free Software Foundation; either version 2.1 of the         *
  *  License, or (at your option) any later version.             *
  *                                                              *
  *  This library is distributed in the hope that it will        *
  *  be useful, but WITHOUT ANY WARRANTY; without even the       *
  *  implied warranty of MERCHANTABILITY or FITNESS FOR A        *
  *  PARTICULAR PURPOSE. See the GNU Lesser General Public       *
  *  License for more details.                                   *
  *                                                              *
  *  You should have received a copy of the GNU Lesser           *
  *  General Public License along with this library;             *
  *  Inc., 59 Temple Place, Suite 330, Boston,                   *
  *  MA 02111-1307 USA                                           *
  *                                                              *
  ****************************************************************/

/*
Version 2.x now autoMagically applies borders via CSS rules.
Safari, Chrome and Mozilla support rounded borders via

-webkit-border-radius, -moz-border-radius

We let these browsers render their borders natively.
Firefox for Windows renders non-antialiased
borders so they look a bit ugly. Google's Chrome will render its "ugly"
borders as well. So if we let FireFox, Safari, and Chrome render their
borders natively, then we only have to support IE and Opera
for rounded borders. Fortunately IE reads CSS properties
that it doesn't understand (Opera, Firefox and Safari discard them);
so for IE and Opera we find and apply -webkit-border-radius and friends.

So to make curvycorners work with any major browser simply add the following
CSS declarations and it should be good to go...

.round {
  -webkit-border-radius: 3ex;
  -moz-border-radius: 3ex;
}

NB at present you must (for Opera's sake) include these styles in
the page itself.
*/

function browserdetect() {
  var agent = navigator.userAgent.toLowerCase();
  this.isIE      = agent.indexOf("msie") > -1;
  this.ieVer = this.isIE ? /msie\s(\d\.\d)/.exec(agent)[1] : 0;
  this.isMoz     = agent.indexOf('firefox') != -1;
  this.isSafari  = agent.indexOf('safari') != -1;
  this.quirksMode= this.isIE && (!document.compatMode || document.compatMode.indexOf("BackCompat") > -1);
  this.isOp      = 'opera' in window;
  this.isWebKit  = agent.indexOf('webkit') != -1;
  if (this.isIE) {
    this.get_style = function(obj, prop) {
      if (!(prop in obj.currentStyle)) return "";

      var matches = /^([\d.]+)(\w*)/.exec(obj.currentStyle[prop]);
      if (!matches) return obj.currentStyle[prop];
      if (matches[1] == 0) return '0';
      // now convert to pixels if necessary
      if (matches[2] && matches[2] !== 'px') {
        var style = obj.style.left;
        var rtStyle = obj.runtimeStyle.left;
        obj.runtimeStyle.left = obj.currentStyle.left;
        obj.style.left = matches[1] + matches[2];
        matches[0] = obj.style.pixelLeft;
        obj.style.left = style;
        obj.runtimeStyle.left = rtStyle;
      }
      return matches[0];
    };
  }
  else {
    this.get_style = function(obj, prop) {
      prop = prop.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
      return document.defaultView.getComputedStyle(obj, '').getPropertyValue(prop);
    };
  }
}
var curvyBrowser = new browserdetect;

/* Force caching of bg images in IE6 */
if (curvyBrowser.isIE) {
  try {
    document.execCommand("BackgroundImageCache", false, true);
  }
  catch(e) {};
}

// object that parses border-radius properties for a box

function curvyCnrSpec(selText) {
  this.selectorText = selText;
  this.tlR = this.trR = this.blR = this.brR = 0;
  this.tlu = this.tru = this.blu = this.bru = "";
  this.antiAlias = true; // default true
}
curvyCnrSpec.prototype.setcorner = function(tb, lr, radius, unit) {
  if (!tb) { // no corner specified
    this.tlR = this.trR = this.blR = this.brR = parseInt(radius);
    this.tlu = this.tru = this.blu = this.bru = unit;
  }
  else { // corner specified
    propname = tb.charAt(0) + lr.charAt(0);
    this[propname + 'R'] = parseInt(radius);
    this[propname + 'u'] = unit;
  }
}
/*
  get(propstring)
  where propstring is:
  - 'tR' or 'bR' : returns top or bottom radius.
  - 'tlR', 'trR', 'blR' or 'brR' : returns top/bottom left/right radius.
  - 'tlu', 'tru', 'blr' or 'bru' : returns t/b l/r unit (px, em...)
  - 'tRu' or 'bRu' : returns top/bottom radius+unit
  - 'tlRu', 'trRu', 'blRu', 'brRu' : returns t/b l/r radius+unit
*/
curvyCnrSpec.prototype.get = function(prop) {
  if (/^(t|b)(l|r)(R|u)$/.test(prop)) return this[prop];
  if (/^(t|b)(l|r)Ru$/.test(prop)) {
    var pname = prop.charAt(0) + prop.charAt(1);
    return this[pname + 'R'] + this[pname + 'u'];
  }
  if (/^(t|b)Ru?$/.test(prop)) {
    var tb = prop.charAt(0);
    tb += this[tb + 'lR'] > this[tb + 'rR'] ? 'l' : 'r';
    var retval = this[tb + 'R'];
    if (prop.length === 3 && prop.charAt(2) === 'u')
      retval += this[tb = 'u'];
    return retval;
  }
  throw new Error('Don\'t recognize property ' + prop);
}
curvyCnrSpec.prototype.radiusdiff = function(tb) {
  if (tb !== 't' && tb !== 'b') throw new Error("Param must be 't' or 'b'");
  return Math.abs(this[tb + 'lR'] - this[tb + 'rR']);
}
curvyCnrSpec.prototype.setfrom = function(obj) {
  this.tlu = this.tru = this.blu = this.bru = 'px'; // default to px
  if ('tl' in obj) this.tlR = obj.tl.radius;
  if ('tr' in obj) this.trR = obj.tr.radius;
  if ('bl' in obj) this.blR = obj.bl.radius;
  if ('br' in obj) this.brR = obj.br.radius;
  if ('antiAlias' in obj) this.antiAlias = obj.antiAlias;
};
curvyCnrSpec.prototype.cloneOn = function(box) { // not needed by IE
  var props = ['tl', 'tr', 'bl', 'br'];
  var converted = 0;
  var i, propu;

  for (i in props) if (!isNaN(i)) {
    propu = this[props[i] + 'u'];
    if (propu !== '' && propu !== 'px') {
      converted = new curvyCnrSpec;
      break;
    }
  }
  if (!converted)
    converted = this; // no need to clone
  else {
    var propi, propR, save = curvyBrowser.get_style(box, 'left');
    for (i in props) if (!isNaN(i)) {
      propi = props[i];
      propu = this[propi + 'u'];
      propR = this[propi + 'R'];
      if (propu !== 'px') {
        var save = box.style.left;
        box.style.left = propR + propu;
        propR = box.style.pixelLeft;
        box.style.left = save;
      }
      converted[propi + 'R'] = propR;
      converted[propi + 'u'] = 'px';
    }
    box.style.left = save;
  }
  return converted;
}
curvyCnrSpec.prototype.radiusSum = function(tb) {
  if (tb !== 't' && tb !== 'b') throw new Error("Param must be 't' or 'b'");
  return this[tb + 'lR'] + this[tb + 'rR'];
}
curvyCnrSpec.prototype.radiusCount = function(tb) {
  var count = 0;
  if (this[tb + 'lR']) ++count;
  if (this[tb + 'rR']) ++count;
  return count;
}
curvyCnrSpec.prototype.cornerNames = function() {
  var ret = [];
  if (this.tlR) ret.push('tl');
  if (this.trR) ret.push('tr');
  if (this.blR) ret.push('bl');
  if (this.brR) ret.push('br');
  return ret;
}

/*
  Object that parses Opera CSS
*/
function operasheet(sheetnumber) {
  var txt = document.styleSheets.item(sheetnumber).ownerNode.text;
  txt = txt.replace(/\/\*(\n|\r|.)*?\*\//g, ''); // strip comments
  // this pattern extracts all border-radius-containing rulesets
  // matches will be:
  // [0] = the whole lot
  // [1] = the selector text
  // [2] = all the rule text between braces
  // [3] = top/bottom and left/right parts if present (only if webkit/CSS3)
  // [4] = top|bottom
  // [5] = left|right
  // .. but 3..5 are useless as they're only the first match.
  var pat = new RegExp("^\s*([\\w.#][-\\w.#, ]+)[\\n\\s]*\\{([^}]+border-((top|bottom)-(left|right)-)?radius[^}]*)\\}", "mg");
  var matches;
  this.rules = [];
  while ((matches = pat.exec(txt)) !== null) {
    var pat2 = new RegExp("(..)border-((top|bottom)-(left|right)-)?radius:\\s*([\\d.]+)(in|em|px|ex|pt)", "g");
    var submatches, cornerspec = new curvyCnrSpec(matches[1]);
    while ((submatches = pat2.exec(matches[2])) !== null)
      if (submatches[1] !== "z-")
        cornerspec.setcorner(submatches[3], submatches[4], submatches[5], submatches[6]);
    this.rules.push(cornerspec);
  }
}
// static class function to determine if the sheet is worth parsing
operasheet.contains_border_radius = function(sheetnumber) {
  return /border-((top|bottom)-(left|right)-)?radius/.test(document.styleSheets.item(sheetnumber).ownerNode.text);
}

/*
Usage:

  curvyCorners(settingsObj, "selectorStr");
  curvyCorners(settingsObj, domObj1[, domObj2[, domObj3[, . . . [, domObjN]]]]);
  selectorStr::= "<complexSelector>[, <complexSelector>]..."
  complexSelector::= <selector>[ <selector]
  selector::= "[<elementname>].classname" | "#id"
*/

function curvyCorners() {
  var i, j, boxCol, settings, startIndex;
  // Check parameters
  if (typeof arguments[0] !== "object") throw curvyCorners.newError("First parameter of curvyCorners() must be an object.");
  if (arguments[0] instanceof curvyCnrSpec) {
    settings = arguments[0];
    if (!settings.selectorText && typeof arguments[1] === 'string')
      settings.selectorText = arguments[1];
  }
  else {
    if (typeof arguments[1] !== "object" && typeof arguments[1] !== "string") throw curvyCorners.newError("Second parameter of curvyCorners() must be an object or a class name.");
    j = arguments[1];
    if (typeof j !== 'string') j = '';
    if (j !== '' && j.charAt(0) !== '.' && 'autoPad' in arguments[0]) j = '.' + j; // for compatibility, prefix with dot
    settings = new curvyCnrSpec(j);
    settings.setfrom(arguments[0]);
  }

  // Get object(s)
  if (settings.selectorText) {
    startIndex = 0;
    var args = settings.selectorText.replace(/\s+$/,'').split(/,\s*/); // handle comma-separated selector list
    boxCol = new Array;

    // converts div#mybox to #mybox
    function idof(str) {
      var ret = str.split('#');
      return (ret.length === 2 ? "#" : "") + ret.pop();
    }

    for (i = 0; i < args.length; ++i) {
      var arg = idof(args[i]);
      var argbits = arg.split(' ');
      switch (arg.charAt(0)) {
        case '#' : // id
          j = argbits.length === 1 ? arg : argbits[0];
          j = document.getElementById(j.substr(1));
          if (j === null)
            curvyCorners.alert("No object with ID " + arg + " exists yet.\nCall curvyCorners(settings, obj) when it is created.");
          else if (argbits.length === 1)
            boxCol.push(j);
          else
            boxCol = boxCol.concat(curvyCorners.getElementsByClass(argbits[1], j));
        break;
        default :
          if (argbits.length === 1)
            boxCol = boxCol.concat(curvyCorners.getElementsByClass(arg));
          else {
            var encloser = curvyCorners.getElementsByClass(argbits[0]);
            for (j = 0; j < encloser.length; ++j) {
              //original code: boxCol = boxCol.concat(curvyCorners.getElementsByClass(argbits[1], encloser));
			  boxCol = boxCol.concat(curvyCorners.getElementsByClass(argbits[1], encloser[j]));
            }
          }
        //break;
      }
    }
  }
  else {
    // Get objects
    startIndex = 1;
    boxCol = arguments;
  }

  // Loop through each argument
  for (i = sta