How do you get Selenium to work with SmartGWT components?

I'm trying to use Selenium to select a row in a SmartGWT table.

I have tried the following commands to no avail (the click definitely happens but the table widget doesn't respond):

    selenium.mouseDownAt("isc_ContactListGrid_0_wrapper开发者_运维百科", "50,50");
    selenium.clickAt("isc_ContactListGrid_0_wrapper", "50,50");

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You need to install SmartGWT user extensions and use specific SmartGWT locator (scLocator)

See more here - http://www.rhq-project.org/display/RHQ/Testing+SmartGWT+with+Selenium