var backgrounds = new Array('roses.jpg','lily_lt.jpg','lily_green.jpg');

function initPage()
{
	var nav = document.getElementById("nav");
	if (nav)
	{
		var nodes = nav.getElementsByTagName("li");
		for (var i = 0; i < nodes.length; i++)
		{

				nodes[i].onmouseover = function () 
				{
					this.className += " hover";
				}
				nodes[i].onmouseout = function ()
				{
					this.className = this.className.replace(" hover", "");
				}

		}
	}
	
}
if (window.attachEvent)
	window.attachEvent("onload", initPage);

/*this code for drop-down menu has been updated*/
function initNav()
{
	var nav = document.getElementById("add-nav");
	if (nav)
	{
		var nodes = nav.getElementsByTagName("a");
		for (var i = 0; i < nodes.length; i++)
		{
			var _parent = nodes[i].parentNode;
			if (_parent.parentNode.className == "left-sub-nav" )
			{
				if(_parent.className == "active")
				{
					_parent.className = '';
				}
				else
				{
					_parent.className = 'close';
				}
				nodes[i].onclick = function () 
				{
					if ( this.parentNode.className == "close" ) this.parentNode.className = ""
					else this.parentNode.className = "close";
				}
			}
		}
	}

//switch background

	var nowbg = getCookie('bgnum');

	if(nowbg != null)
	{
	
		nowbg++;
		if(nowbg >= backgrounds.length)
		{
			nowbg = 0;
		}

		setCookie('bgnum',nowbg);

	}
	else
	{
		nowbg = Math.floor(Math.random()*(backgrounds.length));
		setCookie('bgnum',nowbg);
	}
	
	//var _main = document.getElementById('main');
	
	//if(_main)
	//{
		//_main.parentNode.style.background = ' url("/design_images/bg/' + backgrounds[nowbg] + '")';
		document.body.background = "/design_images/bg/" + backgrounds[nowbg];
	//}


}
if (window.addEventListener) window.addEventListener("load", initNav, false)
else if (window.attachEvent) window.attachEvent("onload", initNav);
	

function setCookie(name,value,days,path,domain,secure) {
  var expires, date;
  if (typeof days == "number") {
    date = new Date();
    date.setTime( date.getTime() + (days*24*60*60*1000) );
		expires = date.toGMTString();
  }
  document.cookie = name + "=" + escape(value) +
    ((expires) ? "; expires=" + expires : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

function getCookie(name) {
  var nameq = name + "=";
  var c_ar = document.cookie.split(';');
  for (var i=0; i<c_ar.length; i++) {
    var c = c_ar[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameq) == 0) return unescape( c.substring(nameq.length, c.length) );
  }
  return null;
}

function deleteCookie(name,path,domain) {
  if (getCookie(name)) {
    document.cookie = name + "=" +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}