This page uses a condition statement (if-then-else) to check for either the Netscape or IE browser. A different document is "written" depending on which condition is satisfied:

• If - If tests for the first condition. If (...on the condition that...) Netscape is being run, then write a message telling the user he/she ought to switch to Internet Explorer
• Then - The "then" part of the statement is expressed in the braces after the "if...true" statment is tested. If A is true, then do B
• Else. ...Or else, if A is not true then do C.

Here's how the statement looks:

if (navigator.appName == "Netscape") { document.write("This page is best viewed in Internet Explorer. If you are running Netscape Versions 4.7 or earlier, we suggest you switch to IE to see all the great features on this site.") }

else

{ document.write ("<font face ='comic sans ms, verdana, arial, sans-serif' size ='-2' color='blue'><i>Site best viewed in Internet Explorer.</i></font>") }