function roundedCorners() {
 var divs = document.getElementsByTagName('div');
 var rounded_divs = [];
 /* First locate all divs with 'rounded' in their class attribute
 for (var i = 0; i < divs.length; i++) {
   if (/\brounded\b/.exec(divs[i].className)) {
     rounded_divs[rounded_divs.length] = divs[i];
   }
 }
 /* Now add additional divs to each of the divs we have found */
 for (var i = 0; i < rounded_divs.length; i++) {
   var original = rounded_divs[i];
   /* Make it the inner div of the four */
   original.className = original.className.replace('rounded', '');
   /* Now create the outer-most div */
   var tr = document.createElement('div');
   tr.className = 'rounded2';
   /* Swap out the original (we'll put it back later) */
   original.parentNode.replaceChild(tr, original);
   /* Create the two other inner nodes */
   var tl = document.createElement('div');
   var br = document.createElement('div');
   /* Now glue the nodes back in to the document */
   tr.appendChild(tl);
   tl.appendChild(br);
   br.appendChild(original);
 }
}
/* Run the function once the page has loaded: */

window.onload = roundedCorners;