code: function isIndentationElement(node) {
  	if (!isHtmlElement(node)) {
  		return false;
  	}
  
  	if (node.tagName == "BLOCKQUOTE") {
  		return true;
  	}
  
  	if (node.tagName != "DIV") {
  		return false;
  	}
  
  	for (var i = 0; i < node.style.length; i++) {
  		// Approximate check
  		if (/^(-[a-z]+-)?margin/.test(node.style[i])) {
  			return true;
  		}
  	}
  
  	return false;
  }
docs: "An indentation element is either a blockquote, or a div that has a style attribute that sets "margin" or some subproperty of it."