How to make a show hide

Please copy and paste the script

isi spoiler... (bisa image/script/link/atau widget dalam bentuk HTML) Click hereElectronic Repairer - Product
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div><br /> <div style="margin: 5px;"><div class="bigfont" style="margin-bottom: 2px;"><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 = 'Hide'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'Show'; }" style="margin: 0px; padding: 0px; width: 60px;" type="button" value="Show" /></div><div class="alt2" style="border: 1px inset; margin: 0px; padding: 6px;"><div style="display: none;">isi spoiler... (bisa image/script/link/atau widget dalam bentuk HTML)