Notify event when grid is created and available.

[Ellipsis]

We use multiple datagrids that depend on eachothers selections.

What is the best way with easyui to start dataretrieval after the easyui components are truly available?
At the moment I wait for the Ajax calls to finish, but in IE this sometimes results in an unavailable error message because the ie js engine has not yet finished the main datagrid.