Book Example Has Error - In Need of Help

[Osterling]

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.

//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 = "";
	}

}

[jap]

Have you tried catch(IE) yet?

Is catch() a function you've created yourself? If so... post the code?

Most of the time the book publisher has a website with corrections to errors found in the books.