function FindProxyForURL(url,host)
{
	if (isPlainHostName(host) || dnsDomainIs(host, ".local"))
	   return "DIRECT";

	var host_addr = dnsResolve(host);

	if (isInNet(host_addr, "10.0.0.0", "255.0.0.0") ||
	    isInNet(host_addr, "192.168.0.0", "255.255.0.0") ||
	    isInNet(host_addr, "172.16.0.0", "255.240.0.0") ||
	    isInNet(host_addr, "127.0.0.0", "255.0.0.0"))
	   return "DIRECT";

	var myaddr = myIpAddress();

	if (isInNet(myaddr, "141.163.0.0", "255.255.0.0") ||
	    isInNet(myaddr, "10.0.0.0", "255.0.0.0") ||
	    isInNet(myaddr, "192.168.0.0", "255.255.0.0") ||
	    isInNet(myaddr, "172.16.0.0", "255.240.0.0"))
	   { if (isInNet(host_addr, "141.163.0.0", "255.255.0.0"))
		return "DIRECT";
	   }

	if (shExpMatch(url, "*.channel4.com/*"))
	   return "DIRECT";

	return "PROXY wwwcache.plymouth.ac.uk:3128; \
		PROXY wwwcache1.plymouth.ac.uk:3128; \
		PROXY wwwcache2.plymouth.ac.uk:3128; \
		PROXY wwwcache3.plymouth.ac.uk:3128; \
		DIRECT";
}