/*
 * Background image script
 */
$(document).ready(function() {
			checkCookie();   
		      $("#btn_bg_open").click(function() {
		         $("#bg_panel").animate({ width: "toggle" }, { duration: "slow" });
		      });
		      $("#bg_close").click(function() {
		         $("#bg_panel").animate({ width: "toggle" }, { duration: "slow" });
		      });
		   });

var backImage = new Array(); 

backImage[0] = "http://www.johnmckeown.net/wp-content/themes/johnmckeown-left/images/background1.jpg";
backImage[1] = "http://www.johnmckeown.net/wp-content/themes/johnmckeown-left/images/background2.jpg";
backImage[2] = "http://www.johnmckeown.net/wp-content/themes/johnmckeown-left/images/background3.jpg";
backImage[3] = "http://www.johnmckeown.net/wp-content/themes/johnmckeown-left/images/background4.jpg";
backImage[4] = "http://www.johnmckeown.net/wp-content/themes/johnmckeown-left/images/background5.jpg";
backImage[5] = "http://www.johnmckeown.net/wp-content/themes/johnmckeown-left/images/background6.jpg";

//Set expiration in days
var exp = 1

function changeBGImage(whichImage){
document.getElementById("bgimg").src = backImage[whichImage];
setCookie('jmkbg',backImage[whichImage],exp);
}

function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString())+"; 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 "";
}

function checkCookie()
{
jmkbg=getCookie('jmkbg');
if (jmkbg!=null && jmkbg!="")
  {
	  document.getElementById("bgimg").src = jmkbg;
  }
  else
{
	document.getElementById("bgimg").src = backImage[0];
}  
}