function showContent(contentid) {

	content_div_name = contentid + '_content';
	content_line_div = contentid + '_line_wrapper';

	content_style_object = document.getElementById(content_div_name).style;
	line_style_object = document.getElementById(content_line_div).style;

	if (content_style_object.display == '' || content_style_object.display == 'none') {

		content_style_object.display = 'block';
		line_style_object.display = 'block';

	} else {
		content_style_object.display = 'none';
		line_style_object.display = 'none';
	}
}