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);
}