//1層遮罩整個ifr a me function hideifr a me1() { hideifr a me(0); } //2層遮罩整個ifr a me function hideifr a me2() { hideifr a me(1); } //3層遮罩整個ifr a me function hideifr a me3() { hideifr a me(2); } //遮罩整個ifr a me function hideifr a me(level) { var div = docu