Prototype: How do I find the first element with a certain class?

Prototype: How do I find the first element with a certain class?

References

Reference NO 1

http://stackoverflow.com/questions/13648350/prototype-how-do-i-find-the-first-element-with-a-certain-class

Reference NO 2

http://stackoverflow.com/questions/5250722/js-prototype-get-element-by-class

Reference NO 3

http://prototypejs.org/doc/latest/dom/dollar-dollar/

Reference NO 4

http://prototypejs.org/doc/latest/dom/Element/up/

Reference NO 5

http://www.webmonkey.com/2010/02/get_started_with_prototype/

Reference NO 6

http://bytes.com/topic/javascript/answers/829310-prototype-js-how-find-element-s-class

Reference NO 7

#EANF#

Reference NO 8

#EANF#