function switchContent(obj, container, cookie) {

	obj = (!obj) ? 'sub1' : obj;

	var contentDivs = document.getElementById(container).getElementsByTagName('div');
	for (var i=0, contentDiv; contentDiv=contentDivs[i]; i++) {
		if (contentDiv.id ) {
			contentDiv.className = 'hide';
		}
	}
	document.getElementById(obj).className = '';
	if (cookie){
	createCookie(container,obj,365)
	}
}

function checkCookie(container) {

	(readCookie(container)) ? switchContent(readCookie(container),container) : switchContent('sub1',container);
	
}

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 + "=" + escape(value) + ";path=/";
}

function readCookie(name) {
	if(document.cookie.length > 0) {
		var start = document.cookie.indexOf(name+"=");
		if(start != -1) {
			start = start+name.length+1;
			var end = document.cookie.indexOf(";",start);
			if(end == -1) end = document.cookie.length;
				return unescape(document.cookie.substring(start, end));
		}
	}
	return "";
}