// Left Navigation Script for NYC.gov Agency Templates

// Returns path with folder and file, else -1.
// ex. /folder/file.html
function getPath(thePath) {
	if (thePath == null) { return -1; }
	var startSlash = thePath.lastIndexOf("/");
	startSlash = thePath.lastIndexOf("/",startSlash -1);

	if (startSlash == -1) {
		return -1;
	} else {
		return thePath.substr(startSlash, thePath.length - startSlash);
	}
}

// Returns folder, else -1.
// ex. /folder/
function getFolder(thePath) {
	if (thePath == null) { return -1; }
	var startSlash = thePath.lastIndexOf("/");
	startSlash2 = thePath.lastIndexOf("/",startSlash -1);

	if(startSlash == startSlash2) { return -1; }
	if (startSlash == -1 || startSlash2 == -1) {
		return -1;
	} else {
		return thePath.substr(startSlash2, startSlash - startSlash2 + 1);
	}
}
if ((window.location.href).indexOf("translate_c?hl=en") == -1) { //do not show graphic nav if within google translate

	var currentURL = getPath(location.href);
	var expandCurrentNode = false;
	var haveNodes = false;
	
	document.write("<table width='100%' border='0' cellspacing='0' cellpadding='0'>");
	
	for(x=0;x<NAV_NODES.length;x++) {
		expandCurrentNode = false;
		haveNodes = false;
	
		//check for sub nodes
		if (NAV_NODES[x] == null) break;
		if (NAV_NODES[x].length > 2) {
			if (currentURL.indexOf(getFolder(NAV_NODES[x][1])) != -1) {
				expandCurrentNode = true;
			}
			for(y=2;y<NAV_NODES[x].length;y++) {
				if (NAV_NODES[x][y] == null) break;
				if (NAV_NODES[x][y][1] != null) haveNodes = true;
				if (currentURL.indexOf(getPath(NAV_NODES[x][y][1])) != -1) {
					expandCurrentNode = true;
				}
			}
		}
		var theFolder=getFolder(NAV_NODES[x][1]);
		var drawnSub=false;
		theFolder=theFolder.substr(1,theFolder.length-2);
		//draw main nodes
		if ((currentURL.indexOf("/home/")==-1)&&(currentURL.indexOf(getPath(NAV_NODES[x][1])) != -1 || expandCurrentNode == true)) {
			document.write("<tr valign='top'><td><a onMouseOver=swapImage('"+theFolder+"','"+theFolder+"_3.gif') onMouseOut=restoreImage('"+theFolder+"')  href="+NAV_NODES[x][1]+"><img src='../../includes/site_images/nav/"+theFolder+"_2.gif' alt='"+ NAV_NODES[x][0] + "' border='0' name='"+theFolder+"' id='"+theFolder+"'></a></td></tr>");
			preLoadImages("../../includes/site_images/nav/"+theFolder+"_3.gif");
			expandCurrentNode = true;
		} else {
			document.write("<tr valign='top'><td><a onMouseOver=swapImage('"+theFolder+"','"+theFolder+"_1.gif') onMouseOut=restoreImage('"+theFolder+"')  href="+NAV_NODES[x][1]+"><img src='../../includes/site_images/nav/"+theFolder+"_0.gif' alt='"+ NAV_NODES[x][0] + "' border='0' name='"+theFolder+"' id='"+theFolder+"'></a></td></tr>");
			preLoadImages("../../includes/site_images/nav/"+theFolder+"_1.gif");
		}
	
		//draw sub nodes
		if (NAV_NODES[x].length > 2 && expandCurrentNode == true) {
			for(y=2;y<NAV_NODES[x].length;y++) {
				if (NAV_NODES[x][y] == null) break;
				if (currentURL.indexOf(getPath(NAV_NODES[x][y][1])) != -1) {
					document.write("<tr valign='top'><td class='nav_subsection'><span class='nav_subsection_active'>" + NAV_NODES[x][y][0] + "</span></td></tr>");
					drawnSub=true;
				} else {
					document.write("<tr valign='top'><td class='nav_subsection'><a href='" + NAV_NODES[x][y][1] + "' class='nav_subsection'>" + NAV_NODES[x][y][0] + "</a></td></tr>");
					drawnSub=true;
				}
			}
		}
		if(expandCurrentNode&&!drawnSub&&(currentURL.indexOf("/home/")==-1)){
			document.write("<tr><td class='nav_bg'><img src='../../includes/site_images/spacers/spacer.gif' width='180' height='9' alt='' border=''></td></tr>");
		}else if(drawnSub){
			document.write("<tr><td class='nav_bg'><img src='../../includes/site_images/spacers/spacer.gif' width='180' height='10' alt='' border=''></td></tr>");
		}
	
	}
	
	document.write("</table>");
}