function forwardToFriend(){
    var friendContainer = document.getElementById("friendMail");
    var friendList = friendContainer.getElementsByTagName("input");
    var friendEmailFld = document.getElementById("friendEmailFld");
    var addressFld = document.getElementById("addressFld");
    var targetForm = document.getElementById("targetForm");

    
    // check the email
    var currentEmail = "";
    var reg;
    var emailList = new Array();
    for(var i=0;i<friendList.length;i++){
        currentEmail = friendList[i].value;
        if (currentEmail == "") continue;
        if (!currentEmail.match(/^\w+([_.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/i)){
            alert("请输入正确的电子邮件地址");
            return;
        }
        else
        {
            emailList.push(currentEmail);
        }
    }
    
    // send the email 
    
    addressFld.value = getForwardAddress(document.getElementById("photoURLTxt").value);
    
    if (targetForm && friendEmailFld && addressFld){
        for (var i=0;i<emailList.length;i++){
            friendEmailFld.value = emailList[i];
            targetForm.submit();
        }        
    }

    // clear the email text box
    for(var i=0;i<friendList.length;i++){
        friendList[i].value = "";
    }    
    
    if (emailList.length > 0) alert("发送成功");
    else alert("请输入好友的电子邮件地址");
    return false;
}

function getForwardAddress(fullPath){
    var result = fullPath;
    result = result.substring(result.lastIndexOf("/") + 1);
    return result;
}