Adobe will contribute source code to the Mozilla Foundation in a bid to establish a standard scripting language for creating interactive applications for Adobe's Flash Player and Mozilla's Firefox browser.

The partners plan to announce today that Adobe will hand over source code from its ActionScript Virtual Machine, the scripting language engine in its Flash Player.

With the source code, Mozilla will host an open-source project called Tamarin to implement the final version of a standard scripting language in Firefox's ScriptMonkey JavaScript engine. Adobe's contribution is the largest made to the Mozilla Foundation since its inception, according to the organisations.

The standard scripting language that Tamarin will implement in Firefox is ECMAScript 4, now being developed by standards body Ecma International. Sun Microsystems's JavaScript and Microsoft's JScript are both based on ECMAScript, which is currently in its third version.

Tamarin's ultimate goal is to "unify" scripting across Firefox and Flash and thus give web developers an open-source virtual machine for developing and deploying rich, interactive applications across both platforms, according to the organisations.

The effort should yield better compatibility, integration and stability between Flash and Firefox and make it easier for developers to work with the two environments, said Michael Goulde, a Forrester Research analyst.

More information about Tamarin can be found here.