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Technical Support
The following are guidelines to help solve any problems you may have using this web site.
If you cannot find the answer you need please send us your question and
we will endeavor to answer it as quickly as possible.
Problem:
A gray box, or nothing at all where the interactive animation should be.
Most of the animations on the site are written in Flash. The exception is the Calculus chapter, where they are written in Java.
Both these require a browser plug in.
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Is the problem on just one computer?
If you are on a local network, say inside a school district, the network often has filters to eliminate undesired content. Some times this filter is configures in such a way that it blocks Flash and/or Java. To check for this, try other computers in the network. If they all act badly, contact the network support department and ask them to correct the filter.
As an additional test, try accessing the site from outside the network - say from home. If that works, then it's a filter problem.
Note: These filters are updated automatically sometimes, so a new update may cause a block that was not there before.
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Is Javascript enabled?
Javascript is a language that runs inside the browser. It is used on this site to launch the animations and so must not be turned off. In the settings of the browser is a checkbox to enable or disable Javascript. It must be enabled. To find this setting in your browser, do a Google search "disable javascript" and the browser name. These setting panels change all the time with each version
so cannot be documented here. In some browsers it is labelled "Enable scripting".
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Are the plug-ins installed?
To run Flash and Java you need software plug-ins to be installed. They are downloaded and installed from the manufacturer's sites:
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