rem: anonymousRow.style.display = (!isIp && !isEmpty) ? 'none' : ''; 
add: if( anonymousRow ) { anonymousRow.style.display = (!isIp && !isEmpty) ? 'none' : ''; } 
context: function updateBlockOptions() {	if (!document.getElementById)		return;	var target = document.getElementById('mw-bi-target');	if (!target)		return;	var addy = target.value;	var isEmpty = addy.match(/^\s*$/);	var isIp = addy.match(/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|:(:[0-9A-Fa-f]{1,4}){1,7}|[0-9A-Fa-f]{1,4}(:{1,2}[0-9A-Fa-f]{1,4}|::$){1,7})(\/\d+)?$/);	/*	var anonymousCheck = document.getElementById('wpAnonOnly');	anonymousCheck.disabled = !isIp && !isEmpty;	var autoblockCheck = document.getElementById('wpEnableAutoblock');	autoblockCheck.disabled = isIp && !isEmpty;	var emailblockCheck = document.getElementById('wpEmailBan');	emailblockCheck.disabled = isIp && !isEmpty;	*/	var anonymousRow = document.getElementById('wpAnonOnlyRow');	anonymousRow.style.display = (!isIp && !isEmpty) ? 'none' : '';	var autoblockRow = document.getElementById('wpEnableAutoblockRow');	autoblockRow.style.display = isIp && !isEmpty ? 'none' : '';	var emailblockRow = document.getElementById('wpEnableEmailBan');	emailblockRow.style.display = isIp && !isEmpty ? 'none' : '';		var emailblockRow = document.getElementById('wpEnableHideUser');	emailblockRow.style.display = isIp && !isEmpty ? 'none' : '';}
meta: 7642	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7642/9218674e316031be36f025c45a8038a971556605/block.js/buggy/skins/common/block.js