function WiFiDown() {
        var down = confirm("确定要关闭 wlan0 吗？");
        if(down) {
        } else {
                alert("操作已取消");
        }
}

function UpdateNetworks() {
	var existing = document.getElementById("networkbox").getElementsByTagName('div').length;
	document.getElementById("Networks").value = existing;
}

function AddNetwork() {
	var Networks = document.getElementById('Networks').value;
        document.getElementById('networkbox').innerHTML += '<div id="Networkbox'+Networks+'" class="Networkboxes">网络 '+Networks+'<input type="button" value="删除" onClick="DeleteNetwork('+Networks+')" /><br /> \
<span class="tableft">SSID :</span><input type="text" name="ssid'+Networks+'" onkeyup="CheckSSID(this)"><br /> \
<span class="tableft">PSK :</span><input type="password" name="psk'+Networks+'" onkeyup="CheckPSK(this)"></div>';
	Networks++;
	document.getElementById('Networks').value=Networks;

}

function AddScanned(network) {
	existing = document.getElementById("networkbox").getElementsByTagName('div').length;
        var Networks = document.getElementById('Networks').value;
	if(existing != 0) {
	        document.getElementById('Networks').value = Networks;
	}
        //document.getElementById('Networks').value=Networks;
        document.getElementById('networkbox').innerHTML += '<div id="Networkbox'+Networks+'" class="Networkboxes">网络 '+Networks+'<input type="button" value="删除" /><br /> \
<span class="tableft">SSID :</span><input type="text" name="ssid'+Networks+'" id="ssid'+Networks+'" onkeyup="CheckSSID(this)"><br /> \
<span class="tableft">PSK :</span><input type="password" name="psk'+Networks+'" onkeyup="CheckPSK(this)"></div>';
	document.getElementById('ssid'+Networks).value = network;
	if(existing == 0) {
		Networks++
		document.getElementById('Networks').value = Networks;
	}
	document.getElementById('Networks').value = Networks;
	Networks++
}

function CheckSSID(ssid) {
        if(ssid.value.length>31) {
                ssid.style.background='#FFD0D0';
                document.getElementById('Save').disabled = true;
        } else {
                ssid.style.background='#D0FFD0';
                document.getElementById('Save').disabled = false;
        }
}

function CheckPSK(psk) {
	if(psk.value.length > 0 && psk.value.length < 8) {
		psk.style.background='#FFD0D0';
		document.getElementById('Save').disabled = true;
	} else {
		psk.style.background='#D0FFD0';
		document.getElementById('Save').disabled = false;
	}
}

function DeleteNetwork(network) {
	element = document.getElementById('Networkbox'+network);
	element.parentNode.removeChild(element);
	var Networks = document.getElementById('Networks').value;
	Networks--
	document.getElementById('Networks').value = Networks;
}