As i just wanted to insert some bold text into an Alert box, I wondered why the Flex Alert doesn’t support HTML Text. So i wrote a Custom Alert class which just overwrites the regular Alert.show(). Through a trick, it allows to use HTML tags inside the text.
package tools
{
import flash.display.Sprite;
import mx.controls.Alert;
import mx.core.IFlexModuleFactory;
import mx.core.mx_internal;
/**
* Alert-Box [...]
Flex: Show HTML text inside an Alert