When recorded in Selenium IDE, the result is this:
click //span[@id='some_text']/table/tbody/tr/td/table/tbody/tr[2]/th/hd/font/span/acronym
Here is my entry in Eclipse using WebDriver(Java)
driver.findElement(By.xpath("//span[@id='some_text']/table/tbody/tr/td/table/tbody/tr[2]/th/h2/font/span/acronym")).click();
Here is the error I receive:
no such element: Unable to locate element: {"method":"xpath","selector":"//span[@id='some_text']/table/tbody/tr/td/table/tbody/tr[2]/th/h2/font/span/acronym"},
HTML
<span onclick="change_site"('SITES');" style="cursor:pointer; color:#12345; text-decoration:underline;">
<acronym title=Site ID:">DEFAULTSITE</acronym>
</span>