HTML and CSS Reference
You can also use a version of Firebug in Internet Explorer, Opera, and Safari called
Firebug Lite. See http://getfirebug.com/lite.html.
Figure 2.6 The Firebug Debugging window.
tom left corner of the browser window. If you double-click the triangle, a debugging window
opens explaining the error and the line number where it occurred (see Figure 2.7).
Internet Explorer Developer Tools. Every installation of Internet Explorer 8 comes
the fly. It comes with a plethora of features including the ability to control script execution,
set break points, inspect variables, profile performance, edit and prototype new designs, and
the Script tab, then click Start Debugging. When starting the debugging process, the
Developer Tools will refresh the page and you will have all the functionality you expect
from a debugger (see Figure 2.8). Once you are done, click Stop Debugging. Go to Inter-
net Explorer Tools/Developer Tools and the debugger window will appear. Click Script,
and then restart your program in the browser.