Q1078 Netscape 2 and Internet Explorer 3 gives error on image rollover

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Q1078 Netscape 2 and Internet Explorer 3 gives error on image rollover

Symptom: Moving the mouse over an image that is supposed to change gives a JavaScript error instead.

Affects:

Reason: The Image array used to manipulate images already loaded is not supported by JavaScript 1.0.

Workaround: Test the availability of the images array:
1. in the link: onMouseover="if (document.images) dotheswap();">
2. in the script: if (document.images) { // Here we can preload
3. in the functions: if (!document.images) return; // leave if not supported