function roundTable(objID) {
		 var obj = document.getElementById(objID);
		 var Parent, objTmp, Table, TBody, TR, TD;
		 var bdcolor, bgcolor, Space;
		 var trIDX, tdIDX, MAX;
		 var styleWidth, styleHeight;

		 // get parent node
		 Parent = obj.parentNode;
		 objTmp = document.createElement('SPAN');
		 Parent.insertBefore(objTmp, obj);
		 Parent.removeChild(obj);

		 // get attribute
		 bdcolor = obj.getAttribute('rborder');
		 bgcolor = obj.getAttribute('rbgcolor');
		 radius = parseInt(obj.getAttribute('radius'));
		 if (radius == null || radius < 1) radius = 1;
		 else if (radius > 6) radius = 6;

		 MAX = radius * 2 + 1;
		 
		 /*
				 create table {{
		 */
		 Table = document.createElement('TABLE');
		 TBody = document.createElement('TBODY');

		 Table.cellSpacing = 0;
		 Table.cellPadding = 0;

		 for (trIDX=0; trIDX < MAX; trIDX++) {
				 TR = document.createElement('TR');
				 Space = Math.abs(trIDX - parseInt(radius));
				 for (tdIDX=0; tdIDX < MAX; tdIDX++) {
						 TD = document.createElement('TD');
						 
						 styleWidth = '1px'; styleHeight = '1px';
						 if (tdIDX == 0 || tdIDX == MAX - 1) styleHeight = null;
						 else if (trIDX == 0 || trIDX == MAX - 1) styleWidth = null;
						 else if (radius > 2) {
								if (Math.abs(tdIDX - radius) == 1) styleWidth = '2px';
								if (Math.abs(trIDX - radius) == 1) styleHeight = '2px';
						 }

						 if (styleWidth != null) TD.style.width = styleWidth;
						 if (styleHeight != null) TD.style.height = styleHeight;

						 if (Space == tdIDX || Space == MAX - tdIDX - 1) TD.style.backgroundColor = bdcolor;
						 else if (tdIDX > Space && Space < MAX - tdIDX - 1) TD.style.backgroundColor = bgcolor;
						 
						 if (Space == 0 && tdIDX == radius) TD.appendChild(obj);
						 TR.appendChild(TD);
				 }
				 TBody.appendChild(TR);
		 }

		 /*
				 }}
		 */

		 Table.appendChild(TBody);
		 
		 // insert table and remove original table
		 Parent.insertBefore(Table, objTmp);
	}