var arMask = new Array();
// set your IP address(es) in the array arMask
  arMask[0] = new Array('24','164','204','246');   // home
  arMask[1] = new Array('140','31','7','*');   // lab

// optional border around ads
  var bShowBorder=true;

var theIP = '38.103.63.16';

  var bMine = 2; // 2=maybe
  function myIP(given)
  {
    var rtn = bMine;
    if( given!=null )
    { arMask = given.split(',');
      rtn = 2;
    }
    if( rtn==2 )
    {
      var arIP = theIP.split('.');
      var cnt = arMask.length;
      var i,j;
      rtn = 0;
      for( i=0 ; i<cnt ; i++ )
      { for( j=0 ; j<4 ; j++ )
        { if( arMask[i][j]!='*' && arMask[i][j]!=arIP[j] ) break;
       }
        if( j==4 )
        { rtn=1;
          break;
        }
        if( rtn ) break;
      }
      bMine = rtn;
    }
    if( rtn && bShowBorder )
    {
v = '<div';
v = v + ' style="';
v = v + ' padding:2px;';
v = v + ' background-color: #ffff66;';
v = v + ' border:dashed 1px #ff6666;';
v = v + '">';
      document.write(v);
    }

    return rtn;
  }