var current_page,btn_src;

//////////////////////////////////////////////////////////////////////////////
function loadXMLDoc(url,tid){
//alert(url);
vtid=tid;
	var xmlHttp;
	try{xmlHttp=new XMLHttpRequest();}
		catch (e){
	try{xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");}
	catch (e){
		try{xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");}
		catch (e){alert("Your browser does not support AJAX!");
        	return false;
			}
		}
	}
	xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
        {
        if(vtid == "topic" && xmlHttp.readyState==4){
            document.getElementById('topic_content').innerHTML=xmlHttp.responseText;
            }
        }
        }
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}
//////////////////////////////////////////////////////////////////////////////
function set_btn(current_page){
//clear buttons
document.getElementById('hp_btn').src="http://agreeongreen.com/img/hp/btn/btn_home.gif";
document.getElementById('media_kit_btn').src="http://agreeongreen.com/img/hp/btn/btn_media_kit.gif";
document.getElementById('about_us_btn').src="http://agreeongreen.com/img/hp/btn/btn_about_us.gif";
document.getElementById('add_listing_btn').src="http://agreeongreen.com/img/hp/btn/btn_add_listing.gif";
document.getElementById('green_news_btn').src="http://agreeongreen.com/img/hp/btn/btn_green_news.gif";
document.getElementById('user_signup_btn').src="http://agreeongreen.com/img/hp/btn/btn_user_signup.gif";

//set current btn
switch(current_page){
case "hp":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_home_1.gif";
  document.getElementById('hp_btn').src=btn_src;
  break;
case "media_kit":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_media_kit_1.gif";
  document.getElementById('media_kit_btn').src=btn_src;
  break;
case "categories":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_categories_1.gif";
  document.getElementById('categories_btn').src=btn_src;
  break;
case "about_us":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_about_us_1.gif";
  document.getElementById('about_us_btn').src=btn_src;
  break;
case "add_listing":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_add_listing_1.gif";
  document.getElementById('add_listing_btn').src=btn_src;
  break;
case "green_news":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_green_news_1.gif";
  document.getElementById('green_news_btn').src=btn_src;
  break;
case "user_sign_up":
  btn_src="http://agreeongreen.com/img/hp/btn/btn_user_signup_1.gif";
  document.getElementById('user_signup_btn').src=btn_src;
  break;
  }
//alert(current_page);
}
//////////////////////////////////////////////////////////////////////////////
function SetCookie(cookieName,cookieValue,nDays) {
 var today = new Date();
 var expire = new Date();
 if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*24*nDays);
 document.cookie = cookieName+"="+escape(cookieValue)
                 + ";expires="+expire.toGMTString();
}
//////////////////////////////////////////////////////////////////////////////
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 ""
}