if(getCookie("guest_id")==null){
	setCookie("guest_id",Math.round(Math.random() * 1000000000),365*24*60*60*1000);
}

function setCookie(name,value,expire) {   
    var exp  = new Date();   
    exp.setTime(exp.getTime() + expire);   
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString() + ";path=" + "/" + "; domain=" + "legu168.com";   
}   
  
function getCookie(name) {   
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));   
    if(arr != null) return unescape(arr[2]); return null;   
}  

function getCookie2(name) {   
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));   
    if(arr != null) return arr[2]; return null;   
}
  
function delCookie(name){   
    var exp = new Date();   
    exp.setTime(exp.getTime() - 1);   
    var cval=getCookie(name);   
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();   
}