Prototype: add form elements methods chaining test
Prototype: add form elements methods chaining test

sstephenson/prototype,baiyanghese/prototype,Gargaj/prototype,292388900/prototype,ShefronYudy/prototype,erpframework/prototype,leafo/prototype,kangax/prototype,ridixcr/prototype,jgornick/fusejs,ShefronYudy/prototype,ridixcr/prototype,mc0/fusejs,loduis/prototype,mc0/fusejs,Jiasm/prototype,madrobby/prototype,leafo/prototype,sdumitriu/prototype,Jiasm/prototype,sdumitriu/prototype,sstephenson/prototype,savetheclocktower/prototype,sdumitriu/prototype,lamsieuquay/prototype,fashionsun/prototype,Gargaj/prototype,kensnyder/fusejs,292388900/prototype,savetheclocktower/prototype,fashionsun/prototype,erpframework/prototype,ridixcr/prototype,sstephenson/prototype,GunioRobot/fusejs,lamsieuquay/prototype,GunioRobot/fusejs,erpframework/prototype,baiyanghese/prototype,ldf7801528/prototype,loduis/prototype,292388900/prototype,loduis/prototype,ldf7801528/prototype,kangax/prototype,Jiasm/prototype,madrobby/prototype,jgornick/fusejs,Gargaj/prototype,ShefronYudy/prototype,kensnyder/fusejs,fashionsun/prototype,lamsieuquay/prototype,ldf7801528/prototype