function MM_findObj(n, d) { //v4.0
	var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
	}
	if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function showhideLayers(obj) { //v1.0
	var v,obj,image,closeImage,openImage; 
	if ((object=MM_findObj(obj))!=null) { 
		v=object.style.display; 
		if (v == 'none' ) {
			disp = 'block';
		}
		else {
			disp = 'none';
		}
		SetCookie(object.id,disp,'Wed 01 Jan 2020 00:00:00 GMT');
		object.style.display = disp;
	}
}

function SetCookie(cookieName,cookieValue,nDays) {
	document.cookie = cookieName+"="+escape(cookieValue)+";expires="+nDays;
}

function readCookie(name) {
	if (document.cookie == '') return '';
	else {
		var firstChar, lastChar;
		var theBigCookie = document.cookie;
		firstChar = theBigCookie.indexOf(name);
		if (firstChar != -1) {
			firstChar += name.length + 1;
			lastChar = theBigCookie.indexOf(';', firstChar);
			if (lastChar == -1) lastChar = theBigCookie.length;
			return unescape(theBigCookie.substring(firstChar, lastChar));
	  	}
	    else return '';
	}
}