Flex :: How To Create Venn Diagram

My requirement goes like this.I need to create a venn diagram in flex or action script. I need to create 2 circles. Let's say two circles,circle A and circle B. Both circles should have different color and intersected(A^B). So, finally it should have three colors.circle A, circle B and the intersection part respectively. After that, when I click circle A, only circle A part (excluding intersection part) should be highlighted and remaining should be the same. When I click intersection part, only that intersection part(A^B) should be highlighted and circle A should get the initial color as it was. Similar case with tha circle B. I have done all trail n errors using sprite,bit map and degrafa swc also. But I am not able to meet the exact requirement.