function setCookie(cookieName, cookieContent, cookieExpireTime){ // cookieExpireTime in hours
	if(cookieExpireTime>0){
		var expDate=new Date();
		expDate.setTime(expDate.getTime()+cookieExpireTime*1000*60*60);
		var expires=expDate.toGMTString();
		document.cookie=cookieName+'='+escape(cookieContent)+'; path='+escape('/')+'; expires='+expires;
	}else{
		document.cookie=cookieName+'='+escape(cookieContent)+'; path='+escape('/')+'';
	}
}

function getCookie(cookieName){
	var ourCookie=document.cookie;
	if(!ourCookie || ourCookie=='') return '';
	ourCookie=ourCookie.split(';');
	var i=0;
	var Cookie;
	while(i<ourCookie.length){
		Cookie=ourCookie[i].split('=')[0];
		if(Cookie.charAt(0)==' ')
			Cookie=Cookie.substring(1);
		if(Cookie==cookieName)
			return unescape(ourCookie[i].split('=')[1]);
		i++;
	}
	return '';
}