When installing the WebEQ Viewer Control (referred to as the MathViewer in WebEQ 2.5 and earlier), some users find that when going to the Viewer Control test page, that the example equation "x² + 4x + 4 = 0" does not appear. This may occur for the following reasons:

Your browser does not support Java
Java or JavaScript is not enabled in your browser
Your browser that is not handled by our automatic installation
The automatic installation failed.

If you are running Windows, please see our notice about installing the WebEQ Viewer Control under Windows.

Reason

The WebEQ Viewer Control is a Java applet. Your browser must support Java and have it enabled in order to use the Viewer Control. The automatic WebEQ Viewer Control automatic installation process requires that your browser supports JavaScript and that it is activated to work correctly. Some browsers, such as Opera or Netscape 6, are not supported by our autoinstallation script and require manual installation. The autoinstallation script may fail if you are behind a firewall.

Solution

Make sure that you have Java installed on your computer. If you have Java installed in your browser, You should see, inside the box below, a message saying, "Java is installed and active in your browser".

If you do not, you will first need to refer to your browser's Help files or website to see how to install and activate Java for your browser. Some browsers are distributed without Java and you must download it as a plug-in from Sun Microsystem's website.

Next, make sure that your browser supports JavaScript. Click here to test JavaScript . A message box should open that says, "JavaScript is active in your browser." If a message box doesn't open, you should refer to your browser's help files, online documentation, or support staff to see how to activate it. After activating JavaScript, you can return to our WebEQ Viewer Control Installation page and try automatically installing it again. If you cannot get the automatic installation to work, you will need to install the WebEQ Viewer Control manually.

This notice explains how to manually install the Viewer Control for the following browser/operating system configurations:

1. Microsoft Internet Explorer 5.x, Netscape 6.x and 7.0bx, and Mozilla 0.9x and 1.0x under Mac OS 8.x and 9.x

2. Microsoft Internet Explorer 5.x, Netscape 6.x and 7.0bx, and Mozilla 0.9x and 1.0x under Mac OS X.x

3. Netscape 4.7x under Mac OS 8.x and 9.x

If you are using a configuration that is not addressed here, please contact us and include which operating system, browser, and versions of them that you are using.

Microsoft Internet Explorer 5.x, Netscape 6.x, and Mozilla 0.9x and 1.0x under Mac OS 8.x and 9.x

To manually install the Viewer Control, you need to download a copy of WebEQApplet.jar and place it into the correct location. All three browsers use the same location.

Click here to download a copy of WebEQApplet.jar.
Some browsers will ask you where you want to save WebEQApplet.jar and others will place it by default, on the Desktop. If asked, you should save it on your Desktop.
After WebEQApplet.jar has finished downloading, it will appear with an icon on your Desktop. Do not double-click on the icon or you may accidentally expand it.
Quit your browser and all other running programs.
The correct location for WebEQApplet.jar is:

System:Extensions:MRJLibrary:MRJClasses

Locate this folder on your hard drive and drag the WebEQApplet.jar file into it.

Upon restarting your browser, you should be able to properly view equations created with WebEQ such as the one on our test page.

Microsoft Internet Explorer 5.x, Netscape 6.x, and Mozilla 0.9x and 1.0x under Mac OS X.x

To manually install the Viewer Control, you need to download a copy of WebEQApplet.jar and place it into the correct location. All three browsers use the same location.

Click here to download a copy of WebEQApplet.jar.
Some browsers will ask you where you want to save WebEQApplet.jar and others will place it by default, on the Desktop. If asked, you should save it on your Desktop.
After WebEQApplet.jar has finished downloading, do not double-click on the icon or you may accidentally expand it.
Quit your browser and all other running programs.
The WebEQApplet.jar file should be placed onto the hard drive or partition containing your OS X installation. The correct location on that hard drive is:

Library:Java:Extensions

Locate this folder and drag the WebEQApplet.jar file into it.

Upon restarting your browser, you should be able to properly view equations created with WebEQ such as the one on our test page.

Netscape 4.7x under Mac OS 8.x and 9.x

We recommend that Netscape 4.7x for Macintosh users either upgrade to Netscape 6.x or use Microsoft Internet Explorer to view pages that include WebEQ equations.

Netscape 4.7x uses an outdated, built-in version of Java which cannot correctly render WebEQ 3.0 equations. Because our WebEQ Viewer Test page uses a version 3.0 applet, it will not appear correctly in Netscape 4.7x on a Macintosh even if the WebEQ Viewer Control is properly installed. WebEQ 2.5 equation applets should appear correctly, however. In the box below is a WebEQ 2.5 applet. If the example equation "x² + 4x + 4 = 0" appears correctly, but the equation on our test page does not, the WebEQ Viewer Control is properly installed in Netscape 4.7x and will allow you to view WebEQ 2.5 equations.

If you can view the above equation correctly but other webpages that contain WebEQ equations do not appear correctly, put your mouse pointer over the space where the equation should be. If, at the bottom of your Netscape window, it says,

"Applet webeq3.ViewerControl can't start: exception: java.lang.ClassNotFoundException: java/awt/datatransfer/ClipboardOwner"

then the WebEQ Viewer is installed correctly in Netscape but you are trying to read WebEQ 3 equations. If the WebEQ Viewer Control is not installed, the error at the bottom of your Netscape window will read,

"Applet webeq3.ViewerControl can't start: class webeq3.ViewerControl not found"

If the pages you are viewing were created using WebEQ 2.5, the equations will appear after installing WebEQApplet.jar. If they were created using WebEQ 3, you will not be able to view then in Netscape 4.7x. To view WebEQ 3 equations, you will either need to view the webpages in Netscape 6 or Internet Explorer. Internet Explorer and later versions of Netscape use Macintosh's built-in Macintosh Runtime Java (MRJ) which contains the ClipboardOwner class and can display WebEQ 3 equations.

To manually install the WebEQ Viewer Control into Netscape 4.7x, do the following:

Download the file WebEQApplet.jar by holding down the Option key and clicking here. The dialog below will open.

Save the file on your Desktop.
After WebEQApplet.jar has finished downloading, do not double-click on the WebEQApplet.jar icon or you may accidentally expand it.
Quit your browser and all other running programs.
The correct location for WebEQApplet.jar is:

Applications::Netscape Communicator™ Folder::Essential Files::Java::Lib

Locate this folder in the System folder on your hard drive and drag and drop WebEQApplet.jar into it.

Upon restarting Netscape, you should be able to properly view equations created with WebEQ 2.5 such as the one above.

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