function setCookie(cookieName, cookieContent, cookieExpireTime){
    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 ""
}