/*
 *	navigation list item auto-resizing
 *	Copyright (c) 2007 Traction Corporation.  All Rights Reserved
 *	http://www.tractionco.com/
 *
 *  edited 12/15 to contain livescribe navbar prototype code
 */

if (typeof Prototype!='undefined') {
    Event.observe(window, 'load', tnavInit, false);
}

var kTopLevelWidth = 900;	// width of top-level template elements
var boxAmt = 1;		// amount of horizontal padding, border, margin in the top nav li's
		
function tnavInit(){
	var checkfor = document.getElementById('noscriptnav');
	if(!checkfor){
	var theNav = document.getElementById('tnavList');
	var navItemsPre = theNav.getElementsByTagName('li');
	
	var o=0
	var navItems = new Array();
	for(n=0;n<navItemsPre.length;n++){
		if(navItemsPre[n].parentNode.id == "tnavList"){
			navItems[o] = navItemsPre[n];
			o++
		}
	}
	
	
	
	var realItemWidth = kTopLevelWidth/navItems.length;
	
	if(realItemWidth != Math.floor(realItemWidth)){
		var lowItemWidth = Math.floor(realItemWidth);
		var highItemWidth = Math.ceil(realItemWidth);
		var itemWidthArr = new Array();
		for(i=0;i<navItems.length;i++){
			itemWidthArr[i] = lowItemWidth;
		}
		var k=0;
		while(tableSummation(itemWidthArr) != kTopLevelWidth){
			itemWidthArr[k] = highItemWidth;
			k++;
		}
		for(l=0;l<navItems.length;l++){
			if(l!=0){
				navItems[l].style.width = (itemWidthArr[l] -boxAmt) + "px";
			}else{
				navItems[l].style.width = (itemWidthArr[l] -boxAmt +1) + "px";
			}
		}
	}else{
		for(m=0;m<navItems.length;m++){
			if(m!=0){
				navItems[m].style.width = (realItemWidth -boxAmt) + "px";
			}else{
				navItems[m].style.width = (realItemWidth -boxAmt +1) + "px";
			}
		}
	}
	}
}

function tableSummation(theArr){
	var tableSum = 0;
	for(j=0;j<theArr.length;j++){
		tableSum += theArr[j];
	}
	return tableSum;
}



var dynamicNavBar = "../cgi-bin/WebObjects/LDApp.woa/wa/lsNavBar";
var staticNavBar = "../include/mainnav2.html";
function insertNavBar() {
	function staticNav() { new Ajax.Updater('navMenu', staticNavBar, { method: 'POST'});};
	if(document.cookie.indexOf("li=") != -1) // if there is a cookie named "li"
		new Ajax.Request(dynamicNavBar, {
			onException: staticNav,
			onFailure: staticNav,
			onSuccess: function(transport) {
				// this method relies on "bad" pages beginning with "<!DOCTYPE"
				if(transport.responseText.substr(0, 9) == "<!DOCTYPE") staticNav();
				else $('navMenu').innerHTML = transport.responseText;
			}
		});
	else
		staticNav();
}