function completeInsertAttendance(ret_obj) {
    var error = ret_obj['error'];
    var message = ret_obj['message'];
    var page = ret_obj['page'];
    //alert(message);
    var url = current_url;
    location.href = url;
}

var a = true;
var b = true;
function check(){
    if(a){
        if(!b){return ;}
        a = false;
        this.disabled=true;
        submit();
    } else{ 
        alert(warn_msg);
    }
} 

function checkB(){
    if(b){
        if(!a){return ;}
        b = false;
        this.disabled=true;
        submit();
    } else{ 
        alert(warn_msg);
    }
}

function entercheck(e){
    if(e.keyCode==13){
        checkB();
        return false;
    } else{
        return true;
    }
}