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 // Debugger.Script.prototype.script returns the global the script runs in.

 // Multi-global version.

 var dbg = new Debugger;

 var g1 = newGlobal();

 var g1w = dbg.addDebuggee(g1);

 var g2 = newGlobal();

 var g2w = dbg.addDebuggee(g2);

 var g3 = newGlobal();

 var g3w = dbg.addDebuggee(g3);

 var log = '';

 dbg.onDebuggerStatement = function (frame) {

   log += 'd';

   assertEq(frame.script.global, g1w);

   assertEq(frame.older.script.global, g2w);

   assertEq(frame.older.older.script.global, g3w);

   assertEq(frame.older.older.older.script.global, g1w);

 }

 g1.eval('function f() { debugger; }');

 g2.g1 = g1;

 g2.eval('function g() { g1.f(); }');

 g3.g2 = g2;

 g3.eval('function h() { g2.g(); }');

 g1.g3 = g3;

 g1.eval('function i() { g3.h(); }');

 g1.i();

 assertEq(log, 'd');

 assertEq(g1w.getOwnPropertyDescriptor('f').value.global, g1w);

 assertEq(g2w.getOwnPropertyDescriptor('g').value.global, g2w);

 assertEq(g3w.getOwnPropertyDescriptor('h').value.global, g3w);