How to get ID of input field on click event using selenium RC

Hi,
How to get ID of input field on its click event using selenium RC? i have a page and i want to get input field's id after clicking on it.
Regards.

String variable = selenium.getAttribute("//*[@class='test']@id");

Here I have pass class of field, you can pass other available locator also.

With the help of this you will get ID of that field.