function disableTextField (field) {
	if (document.all || document.getElementById)
		field.disabled = true;
	else {
		field.oldOnFocus = field.onfocus;
		field.onfocus = skip;
	}
}
function enableTextField (field) {
	if (document.all || document.getElementById)
		field.disabled = false;
	else {
		field.onfocus = field.oldOnFocus;
	}
}

function disableRadioGroup (radioArrOrButton)
{
  if (radioArrOrButton.type && radioArrOrButton.type == "radio") {
        var radioButton = radioArrOrButton;
        var radioArray = radioButton.form[radioButton.name];
  }
  else
        var radioArray = radioArrOrButton;
        radioArray.disabled = true;
        for (var b = 0; b < radioArray.length; b++) {
        if (radioArray[b].checked) {
                radioArray.checkedElement = radioArray[b];
                break;
        }
  }
  for (var b = 0; b < radioArray.length; b++) {
        radioArray[b].disabled = true;
        radioArray[b].checkedElement = radioArray.checkedElement;
  }
}

function enableRadioGroup (radioArrOrButton)
{
  if (radioArrOrButton.type && radioArrOrButton.type == "radio") {
        var radioButton = radioArrOrButton;
        var radioArray = radioButton.form[radioButton.name];
  }
  else
        var radioArray = radioArrOrButton;

  radioArray.disabled = false;
  radioArray.checkedElement = null;
  for (var b = 0; b < radioArray.length; b++) {
        radioArray[b].disabled = false;
        radioArray[b].checkedElement = null;
  }
}

function disableCheckBox (checkBox) {
  if (!checkBox.disabled) {
    checkBox.disabled = true;
    if (!document.all && !document.getElementById) {
      checkBox.storeChecked = checkBox.checked;
      checkBox.oldOnClick = checkBox.onclick;
      checkBox.onclick = preserve;
    }
  }
}

function enableCheckBox (checkBox)
{
  if (checkBox.disabled) {
    checkBox.disabled = false;
    if (!document.all && !document.getElementById)
      checkBox.onclick = checkBox.oldOnClick;
  }
}


function check_wps_enc(enc, radius, auth)
{
        if (enc == 0 || enc == 1) {
                if (radius != 0)
                        return 2;
        }
        else {
                if (auth & 1)
                        return 2;
        }
        return 0;
}

function check_wps_wlanmode(mo, type)
{
        if (mo == 2) {
                return 1;
        }
        if (mo == 1 && type != 0) {
                return 1;
        }
        return 0;
}


function getDigit(str, num)
{
  i=1;
  if ( num != 1 ) {
  	while (i!=num && str.length!=0) {
		if ( str.charAt(0) == '.' ) {
			i++;
		}
		str = str.substring(1);
  	}
  	if ( i!=num )
  		return -1;
  }
  for (i=0; i<str.length; i++) {
  	if ( str.charAt(i) == '.' ) {
		str = str.substring(0, i);
		break;
	}
  }
  if ( str.length == 0)
  	return -1;
  d = parseInt(str, 10);
  return d;
}

function getDigitforMac(str, num)
{
  i=1;
  if ( num != 1 ) {
  	while (i!=num && str.length!=0) {
		if ( str.charAt(0) == '-' ) {
			i++;
		}
		str = str.substring(1);
  	}
  	if ( i!=num )
  		return -1;
  }
  for (i=0; i<str.length; i++) {
  	if ( str.charAt(i) == '-' ) {
		str = str.substring(0, i);
		break;
	}
  }
  if ( str.length == 0)
  	return -1;
  d = parseInt(str, 10);
  return d;
}

function validateKey(str)
{
   for (var i=0; i<str.length; i++) {
    if ( (str.charAt(i) >= '0' && str.charAt(i) <= '9') ||
    		(str.charAt(i) == '.' ) )
			continue;
	return 0;
  }
  return 1;
}

function validateKey2(str)
{
   for (var i=0; i<str.length; i++) {
    if ( (str.charAt(i) >= '0' && str.charAt(i) <= '9') ||
    		(str.charAt(i) == '-' ) || 
    		(str.charAt(i) >= 'A' && str.charAt(i) <= 'F')||
    		(str.charAt(i) >= 'a' && str.charAt(i) <= 'f') )
			continue;
	return 0;
  }
  return 1;
}

function IsLoopBackIP(str)
{
	if(str=="127.0.0.1")
		return 1;
	return 0;
}

function checkDigitRange(str, num, min, max)
{
  d = getDigit(str,num);
  if ( d > max || d < min )
      	return false;
  return true;
}

function checkDigitRangeforMac(str, num, min, max)
{  
  d = getDigitforMac(str,num);
  if ( d > max || d < min )
      	return false;
  return true;
}

///ql_xu add
function checkLan1andLan2(ip1, mask1, ip2, mask2)
{
	d11 = getDigit(ip1.value,1);
	d12 = getDigit(mask1.value, 1);
	d21 = getDigit(ip2.value,1);
	d22 = getDigit(mask2.value,1);
	d1 = d11 & d12;
	d2 = d21 & d22;
	if (d1 != d2)
		return true;
	
	d11 = getDigit(ip1.value,2);
	d12 = getDigit(mask1.value, 2);
	d21 = getDigit(ip2.value,2);
	d22 = getDigit(mask2.value,2);
	d1 = d11 & d12;
	d2 = d21 & d22;
	if (d1 != d2)
		return true;

	d11 = getDigit(ip1.value,3);
	d12 = getDigit(mask1.value, 3);
	d21 = getDigit(ip2.value,3);
	d22 = getDigit(mask2.value,3);
	d1 = d11 & d12;
	d2 = d21 & d22;
	if (d1 != d2)
		return true;

	d11 = getDigit(ip1.value,4);
	d12 = getDigit(mask1.value, 4);
	d21 = getDigit(ip2.value,4);
	d22 = getDigit(mask2.value,4);
	d1 = d11 & d12;
	d2 = d21 & d22;
	if (d1 != d2)
		return true;

	return false;
}

function checkDhcpIpAddrRange(startIp, endIp)
{
	d1 = getDigit(startIp.value,4);
	d2 = getDigit(endIp.value, 4);

	if (d1 > d2)
		return false;
	return true;
}

function checkDhcpIpandLan1(startIp, endIp, Ip, mask)
{
	ds = getDigit(startIp.value,1);
	de = getDigit(endIp.value, 1);
	di = getDigit(Ip.value,1);
	dm = getDigit(mask.value,1);
	d1 = ds & dm;
	d2 = de & dm;
	d3 = di & dm;
	if ((d1 != d3) || (d2 != d3))
		return false;

	ds = getDigit(startIp.value,2);
	de = getDigit(endIp.value, 2);
	di = getDigit(Ip.value,2);
	dm = getDigit(mask.value,2);
	d1 = ds & dm;
	d2 = de & dm;
	d3 = di & dm;
	if ((d1 != d3) || (d2 != d3))
		return false;

	ds = getDigit(startIp.value,3);
	de = getDigit(endIp.value, 3);
	di = getDigit(Ip.value,3);
	dm = getDigit(mask.value,3);
	d1 = ds & dm;
	d2 = de & dm;
	d3 = di & dm;
	if ((d1 != d3) || (d2 != d3))
		return false;

	ds = getDigit(startIp.value,4);
	de = getDigit(endIp.value, 4);
	di = getDigit(Ip.value,4);
	dm = getDigit(mask.value,4);
	d1 = ds & dm;
	d2 = de & dm;
	d3 = di & dm;
	if ((d1 != d3) || (d2 != d3))
		return false;

	return true;
}

function checkIP(ip)
{
	if (ip.value=="") {
		alert("IP address can't be empty.It should be 4 digit,e.g.xxx.xxx.xxx.xxx.");
		ip.value = ip.defaultValue;
		ip.focus();
		return false;
	}
	if ( validateKey( ip.value ) == 0 ) {
		alert("Invalid IP address value.It should be 0~9.");
		ip.value = ip.defaultValue;
		ip.focus();
		return false;
	}
	
	if( IsLoopBackIP( ip.value)==1 ) {
		alert("Invalid IP address value.");
		ip.value = ip.defaultValue;	// Jenny,  Buglist B058, backward default value
		ip.focus();
		return false;
	}
	
	if ( !checkDigitRange(ip.value,1,0,223) ) {
		alert('Invalid IP address range in 1st digit. It should be 0-223.');
		ip.value = ip.defaultValue;
		ip.focus();
		return false;
	}
	if ( !checkDigitRange(ip.value,2,0,255) ) {
		alert('Invalid IP address range in 2nd digit. It should be 0-255.');
		ip.value = ip.defaultValue;
		ip.focus();
		return false;
	}
	if ( !checkDigitRange(ip.value,3,0,255) ) {
		alert('Invalid IP address range in 3rd digit. It should be 0-255.');
		ip.value = ip.defaultValue;
		ip.focus();
		return false;
	}
	if ( !checkDigitRange(ip.value,4,1,254) ) {
		alert('Invalid IP address range in 4th digit. It should be 1-254.');
		ip.value = ip.defaultValue;
		ip.focus();
		return false;
	}
	
	return true;
}

function checkMask(netmask)
{
	var i, d;
	
	if (netmask.value=="") {
		alert("Net mask can't be empty.It should be 4 digit,e.g.xxx.xxx.xxx.xxx.");
		netmask.value = netmask.defaultValue;
		netmask.focus();
		return false;
	}

	d1 = getDigit(netmask.value,1);
	d2 = getDigit(netmask.value,2);
	d3 = getDigit(netmask.value,3);
	d4 = getDigit(netmask.value,4);
	if(d1==0&&d2==0&&d3==0&&d4==0)
	{
		alert("Net mask can't be zero entirely.");
		netmask.value = netmask.defaultValue;
		netmask.focus();
		return false;
	}
	
	
	
	
	
	
	if ( validateKey( netmask.value ) == 0 ) {
		alert("Invalid net mask value.It should be 0~9.");
		netmask.value = netmask.defaultValue;
		netmask.focus();
		return false;
	}
	
	for (i=1; i<=4; i++) {
		d = getDigit(netmask.value,i);
		if( !(d==0 || d==128 || d==192 || d==224 || d==240 || d==248 || d==252 || d==254 || d==255 )) {
			alert('Invalid net mask digit.\nIt should be 0,128,192,224,240,248,252 or 254.');
			netmask.focus();
			return false;
		}
	}
	
	return true;
}

function deleteClick()
{
	if ( !confirm('Are you sure to delete the selected?') ) {
		return false;
	}
	else
		return true;
}
        
function deleteAllClick()
{
	if ( !confirm('Are you sure to delete all?') ) {
		return false;
	}
	else
		return true;
}

function delClick(index)
{
	if ( !confirm('Are you sure to delete?') ) {
		return false;
	}
	
	document.actionForm.action.value=0;
	document.actionForm.idx.value=index;
	document.actionForm.submit();
	return true;
}

function editClick(index)
{
	document.actionForm.action.value=1;
	document.actionForm.idx.value=index;
	document.actionForm.submit();
	return true;
}

function verifyBrowser() {
	var ms = navigator.appVersion.indexOf("MSIE");
	ie4 = (ms>0) && (parseInt(navigator.appVersion.substring(ms+5, ms+6)) >= 4);
	var ns = navigator.appName.indexOf("Netscape");
	ns= (ns>=0) && (parseInt(navigator.appVersion.substring(0,1))>=4);
	if (ie4)
		return "ie4";
	else
		if(ns)
			return "ns";
		else
			return false;
}

function isBrowser(b,v) {
	browserOk = false;
	versionOk = false;
	
	browserOk = (navigator.appName.indexOf(b) != -1);
	if (v == 0) versionOk = true;
	else  versionOk = (v <= parseInt(navigator.appVersion));
	return browserOk && versionOk;
}

function disableButton (button) {
  if (document.all || document.getElementById)
    button.disabled = true;
  else if (button) {
    button.oldOnClick = button.onclick;
    button.onclick = null;
    button.oldValue = button.value;
    button.value = 'Disable';
  }
}

function disableButtonIB (button) {
	if (isBrowser('Netscape', 0))
		return;
	if (document.all || document.getElementById)
		button.disabled = true;
	else if (button) {
		button.oldOnClick = button.onclick;
		button.onclick = null;
		button.oldValue = button.value;
		button.value = 'Disable';
	}
}

function disableButtonVB (button) {
  if (verifyBrowser() == "ns")
  	return;
  if (document.all || document.getElementById)
    button.disabled = true;
  else if (button) {
    button.oldOnClick = button.onclick;
    button.onclick = null;
    button.oldValue = button.value;
    button.value = 'Disable';
  }
}

function enableButton (button) {
  if (document.all || document.getElementById)
    button.disabled = false;
  else if (button) {
    button.onclick = button.oldOnClick;
    button.value = button.oldValue;
  }
}

function enableButtonVB (button) {
  if (verifyBrowser() == "ns")
  	return;
  if (document.all || document.getElementById)
    button.disabled = false;
  else if (button) {
    button.onclick = button.oldOnClick;
    button.value = button.oldValue;
  }
}

function enableButtonIB (button) {
	if (isBrowser('Netscape', 4))
		return;
	if (document.all || document.getElementById)
		button.disabled = false;
	else if (button) {
		button.onclick = button.oldOnClick;
		button.value = button.oldValue;
	}
}