function $(id){
    return document.getElementById(id);
}

function saveSetting(){
    var ckTimes = $("ck_interval").checked;
    var txtTimesVal = $("txt_interval").value;
    var iTimes = parseInt(txtTimesVal);
    
    if(iTimes < 1 || iTimes > 30){
        alert("间隔时间不能小于1分钟 大于30分钟");
    }
    if(ckTimes && iTimes > 0){
        var readUrl = "MessageService.aspx?handle=saveuserset&times="+iTimes+"&uid="+newGuid();
        var loader = dhtmlxAjax.getSync(readUrl);
        var loadVal = loader.xmlDoc.responseText;
        
        var state = parseInt(loadVal);
        
        if(state == 1){
            window.close();
        }
    }
}

this.newGuid = function(){
    var guid = "";
    for (var i = 1; i <= 32; i++){
      var n = Math.floor(Math.random()*16.0).toString(16);
       guid +=    n;
      if((i==8)||(i==12)||(i==16)||(i==20))
         guid += "-";
     }
    return guid.toUpperCase();
};

String.prototype.trim = function() { return this.replace(/(^\s*)|(\s*$)/g,""); }

function checkInterval(id){
    var ckboxState = $(id).checked;

    if(ckboxState){
        $("txt_interval").disabled = false;
    }else{
        $("txt_interval").disabled = true;
    }
}