this.h1.destroy(); this.h2.destroy(); this.h3.destroy(); new lz._h1(this, {name:"h1"}); new lz._h2(this, {name:"h2"}); new lz._h3(this, {name:"h3"}); <_h1 name="h1"/> <_h2 name="h2"/> <_h3 name="h3"/>