User and System Events

• One can either share raw system message (click event occurred) or higher level user event generated by JavaScript invoked by event

• Note Netscape 4.5 does NOT allow you to generate a general event in a page

  • You can invoke “click” events on form elements but not so events associated with layers
  • You can parse JavaScript invoked by event and transmit but this is unreliable

• So User events are convenient and sometimes required

Function process() …

Invoke Tango JS Interface

with user defined meaning

Click on Button which happens to

invoke some User JavaScript Code

Capture Click and

Invoke Tango JS Interface

with meaning that click occurred

Or

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