// JavaScript Document
function selectNav(navId){
	resetPreviousNav();
	
	var navObj = document.getElementById(navId);
	var cssNav = navObj.className;
	
	
	navIdNum = navId.substring(1);
	navIdChar = navId.substring(0,1);
	navIdPrev = navIdChar +  (parseInt(navIdNum)-1);
	
	var navObjPrevious = document.getElementById(navIdPrev);
	var cssNavPrevious = navObjPrevious.className;
	
	navObj.className="selectedNav";
	
	if(parseInt(navIdNum)-1 > 0)
		navObjPrevious.className="previousNav";
	else
		navObjPrevious.className="mainNavLeftSelected";


	createCookie('navSelected', navId, 31)

}

function resetPreviousNav() {
	getCookie('navSelected')
	navId = getCookie('navSelected'); 
	
	navIdNum = navId.substring(1);
	navIdChar = navId.substring(0,1);
	navIdPrev = navIdChar +  (parseInt(navIdNum)-1)	;
	if(navId != "") {
		navCookieObj = document.getElementById(navId);
		
		navCookieObj.className = "";
	
	
	var navObjPrevious = document.getElementById(navIdPrev);
		
	if(parseInt(navIdNum)-1 > 0)
		navObjPrevious.className="";
	else
		navObjPrevious.className="mainNavLeft";
	
}

}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}


function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
  }
return ""
}