If you have not already done so, you will need to install Chime 1.0. This takes only a few minutes and you will be amply rewarded! Here's how to Check Your Chime Installation and Version. Macintosh users: installation of Chime on the Mac is a bit tricky. Step by step instructions are under Section 7, Procedures in a recent workshop agenda.
Netscape Navigator 3.01 remains available from Netscape under Get Any Netscape Software, then Previously Released Navigators, then the Get Software button. Here's how to Check Your Navigator Version.
You can install multiple versions of Netscape Navigator on your computer simultaneously -- just be sure to specify that each goes in a differently named folder. And of course you can install Navigator plus Internet Explorer on the same computer.
Incompatible browsers may show some molecular images, but will not display the intended images and movements correctly. The following are at least partially INCOMPATIBLE with all Chime resources at this site:
OK, Partially OK, Fails. N=Navigator; n.t.=Not Tested;
|Resource||Windows 3.1x/95 Chime 1.0||Macintosh/PPC Chime 1.0||SGI Chime 0,9e|
|N 3.01||N 4.01||N 3.01||N 4.01||N 3.01||N 4.01|
|Chime: How to Use It.||Fully compatible||Fully compatible||Mostly OK. See below||n.t.||See below||See below|
|RasMol-Saved Scripts in Chime: Gal4:DNA.||Fully compatible||Fully compatible||Fully compatible (Bug: see below)||n.t.||See below||See below|
|Protein Secondary Structure.||Fully compatible||Does not work at all||Mostly OK. See below||n.t.||See below||See below|
|DNA||Fully compatible||New version 2.2 is fully compatible||Fully compatible||n.t.||See below||See below|
|XYZ animation of thermal motion of alpha helix||Fully compatible||Fully compatible||n.t.||n.t.||n.t.||n.t.|
|Command line||Fully compatible||Fully compatible||n.t.||n.t.||n.t.||n.t.|
The UMass Chime resources were developed and tested on Windows3.1/95, where they work as intended. Most of the resources work on the Macintosh, but some have known problems for which a fix has not yet been found. Known problems with Mac Navigator 3.01 for the Protein Secondary Structure tutorial/LCS2 include appearance of the 'Next' button in the wrong place or failure of it to change from red to green (it still works tho), and failure of the yellow and red buttons to appear when 'Stop' is pressed during continuous play (just close the window).
Chime 1.0 for the Macintosh only contains a bug which prevents clicking by the mouse on an atom from producing the intended result (e.g. identifying the atom, or any other 'set picking' operation).
Most of the resources do not work on SGI/Irix with Chime version 0.9e. Chime's 'immediate button' mechanism does not work if the button is hidden (see file chiimmed.js if you download the DNA or ProtSecS tutorials). This can be worked around by leaving the button unhidden, which causes no problem. However several other serious problems occur. Moves usually stall before completion, the molecule disappears for unknown reasons in ProtSecS in debug mode, etc. We'll just have to be patient until MDL can finish version 1.0 for this platform.
See the RasMol Home Page which provides a wealth of information on educational molecular visualization, general information on Chime including links to the best Chime web pages we've seen.