Select current block (scope)?

Hi,

how do I quickly select the current scope or bracketed block (sometimes known as "Balance")?

Example (with | being current cursor location):

if( (a = class.make( a, (b|+c) ) ) == x )

1st Balance would select "b+c"
2nd Balance would select " a, (b+c) "
3rd Balance would select "a = class.make( a, (b+c) ) "
4th Balance would select " (a = class.make( a, (b|+c) ) ) == x "

etc. until the outmost block is reached (probably the braces around the class definition).

What's IDEA's editor command for this? I haven't found it yet... :-/

Thanks, Christian.