/**
 * Fetch et_areas from breadcrumb till given navigation tree depth.
 * @param depth The navigation tree depth
 * @return string et_areas
 */
function get_et_areas(depth) {	
	var depth_int = (depth) ? depth + 1 : 4;
	var i = 1;
	var tmp_areas = "";
	while (document.getElementById("breadcrumb_path_" + i) && (i < depth_int)) {				
		tmp_areas += document.getElementById("breadcrumb_path_" + i).innerHTML + "/";
		i++;
	}
	if (i < depth_int) {
		tmp_areas += document.getElementById("breadcrumb_iscontent").innerHTML;
	} else {
		tmp_areas = tmp_areas.substring(0, tmp_areas.length - 1);
	}
	return tmp_areas;
}