// 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);
	}
}

var currentURL = getPath(location.href);
var expandCurrentNode = false;
var haveNodes = false;

document.write("<table width='100%' border='0' cellspacing='0' cellpadding='0' bgcolor='#FFFFFF'>");

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 colspan='2'><a onMouseOver=MM_swapImage('"+theFolder+"','','../../includes/site_images/nav/"+theFolder+"_0.gif',0) onMouseOut=MM_swapImgRestore() href="+NAV_NODES[x][1]+"><img src='../../includes/site_images/nav/"+theFolder+"_1.gif' alt='"+ NAV_NODES[x][0] + "' border='0' name='"+theFolder+"'></a></td></tr>");
		MM_preloadImages("../../includes/site_images/nav/"+theFolder+"_0.gif");
		expandCurrentNode = true;
	} else {
		document.write("<tr valign='top'><td colspan='2'><a onMouseOver=MM_swapImage('"+theFolder+"','','../../includes/site_images/nav/"+theFolder+"_1.gif',0) onMouseOut=MM_swapImgRestore() href="+NAV_NODES[x][1]+"><img src='../../includes/site_images/nav/"+theFolder+"_0.gif' alt='"+ NAV_NODES[x][0] + "' border='0' name='"+theFolder+"'></a></td></tr>");
		MM_preloadImages("../../includes/site_images/nav/"+theFolder+"_1.gif");
	}

	//draw sub nodes
	if (NAV_NODES[x].length > 2 && expandCurrentNode == true) {
		if(NAV_NODES[x][2] != null){
			document.write("<tr><td colspan='2'><img src='../../includes/site_images/spacers/spacer.gif' width='179' height='6' alt='' border=''></td></tr>");
		}
		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 width='22' class='nav_arrow'><img src='../../includes/site_images/nav/nav_arrow.gif' width='22' height='6' alt='' border='0'></td><td class='nav_subsection' align='left' width='157'><a href='" + NAV_NODES[x][y][1] + "' class='nav_subsection_active'>" + NAV_NODES[x][y][0] + "</a></td></tr>");
				drawnSub=true;
			} else {
				document.write("<tr valign='top'><td width='22' class='nav_arrow'><img src='../../includes/site_images/nav/nav_arrow.gif' width='22' height='6' alt='' border='0'></td><td class='nav_subsection' align='left' width='157'><a href='" + NAV_NODES[x][y][1] + "' class='nav_subsection'>" + NAV_NODES[x][y][0] + "</a></td></tr>");
				drawnSub=true;
			}
		}
	}
	if(drawnSub){
		document.write("<tr><td colspan='2'><img src='../../includes/site_images/spacers/spacer.gif' width='179' height='10' alt='' border=''></td></tr>");
	}
	document.write("<tr><td colspan='2'><img src='../../includes/site_images/spacers/spacer.gif' width='179' height='1' alt='' border=''></td></tr>");
}

document.write("</table>");