Book Example Has Error - In Need of Help

[lilman]

I am so frustrated right now, so frustrated I am tempted to throw my computer right out the window. I am reading this book Beginning Ajax with PHP: From Novice to Professional and the example in the book has an error in the code. Can you believe that? I am trying to teach myself how to program with Ajax and the book itself has bugs, ahh! The error I am getting when I attempt to run this code is this:

Error: catch after unconditional catch
Source File: http://localhost/ajax/functions.js
Line: 17
Source Code:
catch (E)

Below is the source code for function.js, so if someone could help me out I would really appreciated it.

[code]
//Create a boolean variable to check for a valid IE instance.
var xmlhttp = false;

//Check if we are using IE.

try
{ //If the javascript version is greater than 5
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{ //If not, then use the older active x object

//If we are using IE.
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

}
catch (E)
{
//Else we must be using a non-IE browser.
xmlhttp = false;

}

//If we are using a non-IE browser, create a JavaScript instance of the object. if (!xmlhttp && typeof XMLHttpRequest != 'undefined') { xmlhttp = new XMLHttpRequest(); }

//A variable used to distinguish whether to open or close the calendar. var showCalendar = true;

function showHideCalendar()
{

//The location we are loading the page into.
var objID = "calendar";

//Change the current image of the minus or plus.

if (showCalendar == true)
{
//Show the calendar.
document.getElementById("opencloseimg").src = "images/mins.gif";
//The page we are loading.
var serverPage = "calendar.php";
//Set the open close tracker variable.
showCalendar = false;

var obj = document.getElementById(objID);
xmlhttp.open("GET", serverPage);
xmlhttp.onreadystatechange = function()
{
if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
{
obj.innerHTML = xmlhttp.responseText;
}
}
xmlhttp.send(null);
}
else
{
//Hide the calendar.
document.getElementById("opencloseimg").src = "images/plus.gif";
showCalendar = true;

document.getElementById(objID).innerHTML = "";
}

}
[/code]

[ober]

what is line 17?  You aren't creating an object for non-IE browsers.

[lilman]

catch (E)  is line 17