switch(location.host){

case 'www.silkdb.org':

location.href="http://www.silkdb.org/silkdb"
case '202.202.121.24':

case 'silkdb.org':

location.href="http://silkdb.org/silkdb"

case '202.202.121.24':

location.href="http://www.silkdb.org/silkdb"
break;

}