Another language won't replace it until it has multibrowser support, and nothing will achieve universal support except as a plugin.
It was as if the new language replaced the old completely.
In 1860, the Hungarian language replaced Latin as the language of instruction.
Smith (1995) reports that a mixed Guajiro-Spanish language is replacing Wayuu in both countries.
During this period the Georgian language replaced Greek as the language of literacy and culture.
By 1945 the Japanese language replaced Micronesian languages in day-to-day communications.
This version of the C++ programming language standard replaced the standard referred to as C++98, which represented the language's first international standard.
A new modern languages and translation department would replace the previous department.
The language replaced Sanskrit as the administrative language during this period.
A language doesn't replace another language simply due to sheer weight of numbers.