private void updateMarginAndSpacingInfo(UIDL uidl) {
if (!uidl.hasAttribute("invisible")) {
int bitMask = uidl.getIntAttribute("margins");
if (activeMarginsInfo.getBitMask() != bitMask) {
activeMarginsInfo = new VMarginInfo(bitMask);
marginsNeedsRecalculation = true;
}
boolean spacing = uidl.getBooleanAttribute("spacing");
if (spacing != spacingEnabled) {
marginsNeedsRecalculation = true;