case CSSPrimitiveValue.CSS_EMS: case CSSPrimitiveValue.CSS_EXS:  absVal = relVal * base; break;
    public float getFloatValueRelative(float base) {        float relVal = new Float(getCssTextClean(_domCSSValue)).floatValue();        if (ValueConstants.isAbsoluteUnit(cssValue())) {            return relVal;        }        float absVal = 0F;        switch (cssSACPrimitiveValueType()) {            case CSSPrimitiveValue.CSS_PERCENTAGE:                // percentage depends on the property this value belongs to                absVal = (relVal / 100F) * base;                break;            default:                // nothing to do, we only convert those listed above                System.err.println("Asked to convert value from relative to absolute, don't recognize the datatype " + toString());        }        assert(new Float(absVal).intValue() > 0);        // round down        double d = Math.floor((double) absVal);        return new Float(d).floatValue();    }