// JavaScript Document
function Splitwanipaddr ( IPString )
{
	document.forms[0].lan_ipaddr_1.value = GetIPSegment ( IPString , 1 );
	document.forms[0].lan_ipaddr_2.value = GetIPSegment ( IPString , 2 );
	document.forms[0].lan_ipaddr_3.value = GetIPSegment ( IPString , 3 );
	document.forms[0].lan_ipaddr_4.value = GetIPSegment ( IPString , 4 );
	return true;
}
function Selwannetmask( IPString )
{
	document.forms[0].lan_netmask_1.value = GetIPSegment ( IPString , 1 );
	document.forms[0].lan_netmask_2.value = GetIPSegment ( IPString , 2 );
	document.forms[0].lan_netmask_3.value = GetIPSegment ( IPString , 3 );
	document.forms[0].lan_netmask_4.value = GetIPSegment ( IPString , 4 );
	return true;
}
function SplitWanGateway ( IPString )
{
	document.forms[0].wan_gateway_1.value = GetIPSegment ( IPString , 1 );
	document.forms[0].wan_gateway_2.value = GetIPSegment ( IPString , 2 );
	document.forms[0].wan_gateway_3.value = GetIPSegment ( IPString , 3 );
	document.forms[0].wan_gateway_4.value = GetIPSegment ( IPString , 4 );
	return true;
}
function GetIPSegment ( IPString , SegmentNum )
{
	var	DMZ = IPString;
	var	Counter = 0;

	IPString = "";

	for ( iln = 0 ; iln < DMZ.length ; iln++ ) {
      		ch = DMZ.charAt ( iln );
		if ( ch != '.' ) { IPString = IPString + ch; }
		else {
			Counter = Counter + 1;

			if ( Counter == SegmentNum ) { break; }
			else { IPString = ""; }
		}
	}

	return IPString;
}
function set_dhcp()
{
		
		f = document.forms[0];
		f.lan_ipaddr_1.disabled = true;
		f.lan_ipaddr_2.disabled = true;
		f.lan_ipaddr_3.disabled = true;
		f.lan_ipaddr_4.disabled = true;
		f.lan_netmask_1.disabled = true;
		f.lan_netmask_2.disabled = true;
		f.lan_netmask_3.disabled = true;
		f.lan_netmask_4.disabled = true;
		f.wan_gateway_1.disabled = true;
		f.wan_gateway_2.disabled = true;
		f.wan_gateway_3.disabled = true;
		f.wan_gateway_4.disabled = true;
}
//-------------------------------------------------------------------------------
function set_static()
{
		f = document.forms[0];
		f.lan_ipaddr_1.disabled = false;
		f.lan_ipaddr_2.disabled = false;
		f.lan_ipaddr_3.disabled = false;
		f.lan_ipaddr_4.disabled = false;
		f.lan_netmask_1.disabled = false;
		f.lan_netmask_2.disabled = false;
		f.lan_netmask_3.disabled = false;
		f.lan_netmask_4.disabled = false;
		f.wan_gateway_1.disabled = false;
		f.wan_gateway_2.disabled = false;
		f.wan_gateway_3.disabled = false;
		f.wan_gateway_4.disabled = false;
		f.lan_ipaddr_1.enabled = true;
		f.lan_ipaddr_2.enabled = true;
		f.lan_ipaddr_3.enabled = true;
		f.lan_ipaddr_4.enabled = true;
		f.lan_netmask_1.enabled = true;
		f.lan_netmask_2.enabled = true;
		f.lan_netmask_3.enabled = true;
		f.lan_netmask_4.enabled = true;
		f.wan_gateway_1.enabled = true;
		f.wan_gateway_2.enabled = true;
		f.wan_gateway_3.enabled = true;
		f.wan_gateway_4.enabled = true;
}
//-------------------------------------------------------------------------------
function IPCheck(I)
{
		d =parseInt(I.value, 10);
		if ( !(d<256 && d>=0) )
		{
		return false;
		}
		else
		{
		return true;
		}
}