// See http://css-tricks.com/how-to-create-an-ie-only-stylesheet/
if(!isStartingTag) {
enabled.pop();
} else {
if (htmlCCommentExpressionMatcher == null) {
htmlCCommentExpressionMatcher = new HtmlCCommentExpressionMatcher();
}
String expressionString = expression.toString().trim();
enabled.push(Boolean.valueOf(htmlCCommentExpressionMatcher.match(ieVersion.floatValue(),
expressionString)));
}