// tlhunter 2010-03-30
// Automatically highlights current page using simplediv structure
// Altered specifically for Water's static navigation system
var homeLink = false;
$(document).ready(function() {
	var currentPath = window.location.href;
	var domain = document.domain;
	if (domain == "usmdlsdoww200" || domain == "usmdlsdoww840") {
		var metaPath = "http://" + $("meta[name=dow-site-base-internal]").attr("content") + "/";
	} else if (domain.indexOf("-st.") >= 0 || domain.indexOf("preview-") >= 0) {
		var metaPath = "http://preview-" + $("meta[name=dow-site-base]").attr("content") + "/";
	} else {
		var metaPath = "http://" + $("meta[name=dow-site-base]").attr("content") + "/";
	}
	if (metaPath) {
		errorLog("currentPath: " + currentPath, 'info');
		errorLog("metaPath: " + metaPath, 'info');
		if (metaPath == currentPath) {
			$("a.top-level-nav-home").addClass("selected");
		} else {
			if (currentPath.indexOf(metaPath) == 0) {
				subPath = removeTrailingSlash(currentPath.substring(metaPath.length, currentPath.length));
				errorLog("subPath: " + subPath, 'info');
				if (subPath.length > 0) {
					chopPath = removeEmptyArrayElements(currentPath.substr(metaPath.length).split("/"));
					$("a.top-level-nav").each(function() {
						var element = $(this);
						var link = removeEmptyArrayElements(element.attr("href").split("/"));
						if (link[0] == chopPath[0]) {
							element.addClass("selected");
						}
						errorLog("link: " + link + " chopPath: " + chopPath, 'log');
					});
				} else {
					errorLog("We are at the top of the site", 'info');
				}
			} else {
				errorLog("dow-site-base/dow-site-base-internal meta tag is lying to us.", 'error');
			}
		}
	} else {
		errorLog("Site doesn't use dow-site-base/dow-site-base-internal meta tag.", 'info');
	}
});

function removeEmptyArrayElements(myArray) {
	for (var i in myArray) {
		if (myArray[i] == '') {
			myArray.splice(i, 1);
		}
	}
	return myArray;
}

function removeTrailingSlash(string) {
	if (string.substring(string.length - 1) == '/') {
		string = string.substring(0, string.length - 1);
	}
	return string;
}

function errorLog(errorMessage, level) {
	if (typeof console == 'object') {
		if (typeof level == 'undefined')
			console.log(errorMessage);
		else if (level == 'log')
			console.log(errorMessage);
		else if (level == 'debug')
			console.debug(errorMessage);
		else if (level == 'error')
			console.error(errorMessage);
		else if (level == 'info')
			console.info(errorMessage);
	}
}