Cara Membuat Spoiler di Blogspot

Lihat Code:

"MASUKKAN ISI SPOILER YANG ANDA INGINKAN DISINI"

<div style="margin: 5px 20px 20px;"><div class="smallfont" style="margin-bottom: 2px;"><b>Lihat Code</b>: <input onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = ''; this.innerText = ''; this.value = 'Close'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'Open'; }" style="font-size: 11px; margin: 0px; padding: 0px; width: 55px;" type="button" value="Buka" /></div><div class="alt2" style="border: 1px inset; margin: 0px; padding: 6px;"><div style="display: none;"><br /> <br /> "MASUKKAN ISI SPOILER YANG ANDA INGINKAN DISINI"<br /> <br /> <br /> </div></div></div>