/**
 * justcorners.js 2.1 (22-Apr-2011) (c) by Christian Effenberger 
 * All Rights Reserved. Source: corner.netzgesta.de
 * Distributed under Netzgestade Software License Agreement.
 * This license permits free of charge use on non-commercial 
 * and private web sites only under special conditions. 
 * Read more at... http://www.netzgesta.de/cvi/LICENSE.html  
 * Commercial licenses available via... cvi[at]netzgesta[dot]de   
**/

var tmp = navigator.appName == 'Microsoft Internet Explorer' && navigator.userAgent.indexOf('Opera') < 1 ? 1 : 0;
if(tmp) var isIE = document.namespaces && !window.opera && ( !document.documentMode || document.documentMode < 9 ) ? 1 : 0;

if(isIE) {
  if(document.namespaces['v']==null) {
    var e=["shape","shapetype","group","background","path","formulas","handles","fill","stroke","shadow","textbox","textpath","imagedata","line","polyline","curve","roundrect","oval","rect","arc","image"],s=document.createStyleSheet(); 
    for(var i=0; i<e.length; i++) {s.addRule("v\\:"+e[i],"behavior: url(#default#VML);");} document.namespaces.add("v","urn:schemas-microsoft-com:vml");
  } 
}

function roundedCorners(ctx,width,height,radius,lt,rt,lb,rb,bezel){
  ctx.beginPath(); ctx.moveTo(0,radius);
  if(lb==1) {ctx.lineTo(0,height-radius);if(bezel) {ctx.lineTo(radius,height);}else {ctx.quadraticCurveTo(0,height,radius,height);}}else {ctx.lineTo(0,height);}
  if(rb==1) {ctx.lineTo(width-radius,height);if(bezel) {ctx.lineTo(width,height-radius);}else {ctx.quadraticCurveTo(width,height,width,height-radius);}}else {ctx.lineTo(width,height);}
  if(rt==1) {ctx.lineTo(width,radius);if(bezel) {ctx.lineTo(width-radius,0);}else {ctx.quadraticCurveTo(width,0,width-radius,0);}}else {ctx.lineTo(width,0);}  
  if(lt==1) {ctx.lineTo(radius,0);if(bezel) {ctx.lineTo(0,radius);}else {ctx.quadraticCurveTo(0,0,0,radius);}}else {ctx.lineTo(0,0);}  
  ctx.closePath();
}

function addRoundedIECorners() {
  var image, object, vml, classNames, data, classes = ''; 
  var iradius = 0, iborder = 0, icolor = '', newClasses = ''; 
  var maxdim = 0, mindim = 0, i, j, child, ibezel = false, tmp = '';
  var radius = null, display = "", flt = "", color = '';
  var tl = 1, tr = 1, bl = 1, br = 1; 
  var children = document.getElementsByTagName('img'); 
  var theimages = new Array(); 
  for(i=0;i<children.length;i++) {
    child = children[i];
    classNames = child.className.split(' ');
    for(j=0;j<classNames.length; j++) {
      if(classNames[j] == 'corners') {theimages.push(child); break; }
    }
  }  
  for(i=0;i<theimages.length;i++) {  
    image = theimages[i]; iradius = 16; color = '0000ff';
    tl = 1;  tr = 1; bl = 1; br = 1; ibezel = false; iborder = 0;
    object = image.parentNode; 
    classes = image.className.split(' ');
    for(j=0;j<classes.length;j++) {
      if(classes[j].indexOf("iradius") == 0) {
        iradius = classes[j].substring(7);
      }else if(classes[j].indexOf("iborder") == 0) {
        iborder = classes[j].substring(7);
      }else if(classes[j].indexOf("icolor") == 0) {
        icolor = classes[j].substring(6);
      }else if(classes[j].indexOf("ibezel") == 0) {
        ibezel = true;
      }else if(classes[j].indexOf("iradiae") == 0) {
        tmp = classes[j].substring(7);
        tl = (tmp.substr(0,1)!="1"?0:1);
        tr = (tmp.substr(1,1)!="1"?0:1);
        bl = (tmp.substr(2,1)!="1"?0:1);
        br = (tmp.substr(3,1)!="1"?0:1);
      }
    } newClasses = '';
    for(j=0;j<classes.length;j++) {
      if(classes[j] != "corners") {
        if(newClasses) { newClasses += ' '; }
        newClasses += classes[j];
      }
    }
    maxdim = Math.min(image.width,image.height)/2;
    mindim = (iradius==0?16:iradius);
    radius = Math.min(maxdim,mindim);
    iborder = Math.min(iborder,2);
    color = (icolor.match(/^[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]$/i)?icolor:color);
    display = (image.currentStyle.display.toLowerCase()=='block')?'block':'inline-block';        
    vml = document.createElement(['<var style="zoom:1;overflow:hidden;display:' + display + ';width:' + image.width + 'px;height:' + image.height + 'px;padding:0;">'].join(''));
    flt =  image.currentStyle.styleFloat.toLowerCase();
    display = (flt=='left'||flt=='right')?'inline-block':display;
    var path = "m 0," + radius; 
    if(bl==1) {path += " l 0," + (image.height-radius) + (ibezel?" l ":" qy ") + radius + "," + image.height;}else {path += " l 0," + image.height;}
    if(br==1) {path += " l " + (image.width-radius) + "," + image.height + (ibezel?" l ":" qx ") + image.width + "," + (image.height-radius);}else {path += " l " + image.width + "," + image.height;}
    if(tr==1) {path += " l " + image.width + "," + radius + (ibezel?" l ":" qy ") + (image.width-radius) + ",0";}else {path += " l " + image.width + ",0";}  
    if(tl==1) {path += " l " + radius + ",0 " +(ibezel?" l ":" qx ")+ " 0," + radius;}else {path += " l 0,0";}  
    path += " x e"; data = '<v:shape strokeweight="'+iborder+'px" stroked="'+(iborder>0?"t":"f")+'" strokecolor="#'+color+'" filled="t" fillcolor="#ffffff" coordorigin="0,0" coordsize="' + image.width + ',' + image.height + '" path="' + path + '" style="zoom:1;margin:-1px 0 0 -1px;padding: 0;display:' + display + ';width:' + image.width + 'px;height:' + image.height + 'px;"><v:fill src="' + image.src + '" type="frame" /></v:shape>';
    vml.innerHTML = [data ].join('');
    vml.className = newClasses;
    vml.style.cssText = image.style.cssText;
    vml.style.visibility = 'visible';
    vml.src = image.src; vml.alt = image.alt;
    if(image.id!='') vml.id = image.id;
    if(image.title!='') vml.title = image.title;
    if(image.getAttribute('onclick')!='') vml.setAttribute('onclick',image.getAttribute('onclick'));
    image.insertAdjacentElement('BeforeBegin',vml); 
    if(image.getAttribute("usemap")) {
      object.style.position = 'relative';
      object.style.height = image.height+'px';
      object.style.width = image.width+'px';
      image.left = 0; image.top = 0;
      image.style.position = 'absolute';
      image.style.height = image.height+'px';
      image.style.width = image.width+'px';
      image.style.left = 0 + 'px';
      image.style.top = 0 + 'px';
      image.style.filter = "Alpha(opacity=0)";
    }else {
      image.style.display = 'none'; 
    }
  }
}

function addRoundedCorners() {
  var image, object, canvas, context, classNames, classes = '';
  var iradius = 0, iborder = 0, icolor = '', ibezel = false, newClasses = ''; 
  var maxdim = 0, mindim = 0, i, j, child, tmp = '';
  var tl = 1, tr = 1, bl = 1, br = 1, color = '';
  var children = document.getElementsByTagName('img'); 
  var theimages = new Array(); 
  for(i=0;i<children.length;i++) {
    child = children[i];
    classNames = child.className.split(' ');
    for(j=0;j<classNames.length; j++) {
      if (classNames[j] == 'corners') {theimages.push(child); break; }
    }
  }  
  for(i=0;i<theimages.length;i++) {  
    image = theimages[i]; iradius = 16; color = '0000ff';
    tl = 1;  tr = 1; bl = 1; br = 1; ibezel=false; iborder = 0;
    object = image.parentNode; 
    canvas = document.createElement('canvas');
    if(canvas.getContext) {
      classes = image.className.split(' ');  
      for(j=0;j<classes.length;j++) {
        if(classes[j].indexOf("iradius") == 0) {
          iradius = classes[j].substring(7);        
        }else if(classes[j].indexOf("iborder") == 0) {
          iborder = classes[j].substring(7);
        }else if(classes[j].indexOf("icolor") == 0) {
          icolor = classes[j].substring(6);
        }else if(classes[j].indexOf("ibezel") == 0) {
          ibezel = true;
        }else if(classes[j].indexOf("iradiae") == 0) {
          tmp = classes[j].substring(7);
          tl = (tmp.substr(0,1)!="1"?0:1);
          tr = (tmp.substr(1,1)!="1"?0:1);
          bl = (tmp.substr(2,1)!="1"?0:1);
          br = (tmp.substr(3,1)!="1"?0:1);
        }
      } newClasses = '';
      for(j=0;j<classes.length;j++) {
        if(classes[j] != "corners") {
          if(newClasses) { newClasses += ' '; }
          newClasses += classes[j];
        }
      }
      canvas.className = newClasses;
      canvas.style.cssText = image.style.cssText;
      canvas.style.height = image.height+'px';
      canvas.style.width = image.width+'px';
      canvas.height = image.height;
      canvas.width = image.width;
      canvas.src = image.src; canvas.alt = image.alt;
      if(image.id!='') canvas.id = image.id;
      if(image.title!='') canvas.title = image.title;
      if(image.getAttribute('onclick')!='') canvas.setAttribute('onclick',image.getAttribute('onclick'));
      maxdim = Math.min(canvas.width,canvas.height)/2;
      mindim = (iradius==0?16:iradius);
      iradius = Math.min(maxdim,mindim);
      iborder = Math.min(iborder*2,iradius);
      color = (icolor.match(/^[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]$/i)?icolor:color);
      context = canvas.getContext("2d");
      if(image.getAttribute("usemap")) {
        object.style.position = 'relative';
        object.style.height = image.height+'px';
        object.style.width = image.width+'px';
        canvas.left = 0; canvas.top = 0;
        canvas.style.position = 'absolute';
        canvas.style.left = 0 + 'px';
        canvas.style.top = 0 + 'px';
        image.left = 0; image.top = 0;
        image.style.position = 'absolute';
        image.style.height = image.height+'px';
        image.style.width = image.width+'px';
        image.style.left = 0 + 'px';
        image.style.top = 0 + 'px';
        image.style.opacity = 0;
        object.insertBefore(canvas,image);
      }else {
        object.replaceChild(canvas,image);
      }
      context.clearRect(0,0,canvas.width,canvas.height);
      globalCompositeOperation = "source-in";
      roundedCorners(context,canvas.width,canvas.height,iradius,tl,tr,bl,br,ibezel);
      context.clip();
      context.fillStyle = 'rgba(0,0,0,0)';
      context.fillRect(0,0,canvas.width,canvas.height);
      context.drawImage(image,0,0,canvas.width,canvas.height);
      if(iborder>0) {
        roundedCorners(context,canvas.width,canvas.height,iradius,tl,tr,bl,br,ibezel);
        context.strokeStyle = '#'+color;
        context.lineWidth = iborder;
        context.stroke(); 
      }
      canvas.style.visibility = 'visible';
    }
  }
}

if(window.addEventListener) window.addEventListener("load",addRoundedCorners,false);
else window.attachEvent("onload",addRoundedIECorners);