function setCookie(name,value,days){
    if(days){
        var date=new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var datExpires=date.toGMTString();
    }
    else{
        var datExpires='';
    }
    document.cookie=name+'='+value+'; expires='+datExpires+'; path=/';
}
function getCookie(name){
    //Cookies for read format
    //Ex: 'cookie1=xxx; cookie2=yyy'
    //=========================================
    var strName=name+'=';
    var arrCookie=document.cookie.split(";");
    for(var i=0;i<arrCookie.length;i++) {
        var strCookie=arrCookie[i];
        while(strCookie.charAt(0)==' '){
	        strCookie=strCookie.substring(1,strCookie.length);
	    }
        if(strCookie.indexOf(strName)==0){
		    return strCookie.substring(strName.length,strCookie.length);
        }
    }
    return null;
}