if (document.images) {
  var outbut1 = new Image(); outbut1.src = 'pics/1_1.gif';
  var overbut1 = new Image(); overbut1.src = 'pics/1_2.gif';
  var upbut1 = new Image(); upbut1.src = 'pics/1_2.gif';
  var downbut1 = new Image(); downbut1.src = 'pics/1_3.gif';

  var outbut2 = new Image(); outbut2.src = 'pics/2_1.gif';
  var overbut2 = new Image(); overbut2.src = 'pics/2_2.gif';
  var upbut2 = new Image(); upbut2.src = 'pics/2_2.gif';
  var downbut2 = new Image(); downbut2.src = 'pics/2_3.gif';

  var outbut3 = new Image(); outbut3.src = 'pics/3_1.gif';
  var overbut3 = new Image(); overbut3.src = 'pics/3_2.gif';
  var upbut3 = new Image(); upbut3.src = 'pics/3_2.gif';
  var downbut3 = new Image(); downbut3.src = 'pics/3_3.gif';

  var outbut4 = new Image(); outbut4.src = 'pics/4_1.gif';
  var overbut4 = new Image(); overbut4.src = 'pics/4_2.gif';
  var upbut4 = new Image(); upbut4.src = 'pics/4_2.gif';
  var downbut4 = new Image(); downbut4.src = 'pics/4_3.gif';

  var outbut5 = new Image(); outbut5.src = 'pics/5_1.gif';
  var overbut5 = new Image(); overbut5.src = 'pics/5_2.gif';
  var upbut5 = new Image(); upbut5.src = 'pics/5_2.gif';
  var downbut5 = new Image(); downbut5.src = 'pics/5_3.gif';

  var outbut6 = new Image(); outbut6.src = 'pics/6_1.gif';
  var overbut6 = new Image(); overbut6.src = 'pics/6_2.gif';
  var upbut6 = new Image(); upbut6.src = 'pics/6_2.gif';
  var downbut6 = new Image(); downbut6.src = 'pics/6_3.gif';

  var outbut7 = new Image(); outbut7.src = 'pics/7_1.gif';
  var overbut7 = new Image(); overbut7.src = 'pics/7_2.gif';
  var upbut7 = new Image(); upbut7.src = 'pics/7_2.gif';
  var downbut7 = new Image(); downbut7.src = 'pics/7_3.gif';

  var outbut8 = new Image(); outbut8.src = 'pics/8_1.gif';
  var overbut8 = new Image(); overbut8.src = 'pics/8_2.gif';
  var upbut8 = new Image(); upbut8.src = 'pics/8_2.gif';
  var downbut8 = new Image(); downbut8.src = 'pics/8_3.gif';

  var outbut9 = new Image(); outbut9.src = 'pics/9_1.gif';
  var overbut9 = new Image(); overbut9.src = 'pics/9_2.gif';
  var upbut9 = new Image(); upbut9.src = 'pics/9_2.gif';
  var downbut9 = new Image(); downbut9.src = 'pics/9_3.gif';

  var outbut10 = new Image(); outbut10.src = 'pics/10_1.gif';
  var overbut10 = new Image(); overbut10.src = 'pics/10_2.gif';
  var upbut10 = new Image(); upbut10.src = 'pics/10_2.gif';
  var downbut10 = new Image(); downbut10.src = 'pics/10_3.gif';

  var outbul1 = new Image(); outbul1.src = 'pics/bul1.gif';
  var overbul1 = new Image(); overbul1.src = 'pics/bul2.gif';

  var outbul2 = new Image(); outbul2.src = 'pics/bul1.gif';
  var overbul2 = new Image(); overbul2.src = 'pics/bul2.gif';

  var outbul3 = new Image(); outbul3.src = 'pics/bul1.gif';
  var overbul3 = new Image(); overbul3.src = 'pics/bul2.gif';

  var outbul4 = new Image(); outbul4.src = 'pics/bul1.gif';
  var overbul4 = new Image(); overbul4.src = 'pics/bul2.gif';

  var outbul5 = new Image(); outbul5.src = 'pics/bul1.gif';
  var overbul5 = new Image(); overbul5.src = 'pics/bul2.gif';

  var outbul6 = new Image(); outbul6.src = 'pics/bul1.gif';
  var overbul6 = new Image(); overbul6.src = 'pics/bul2.gif';

  var outbul7 = new Image(); outbul7.src = 'pics/bul1.gif';
  var overbul7 = new Image(); overbul7.src = 'pics/bul2.gif';

  var outbul8 = new Image(); outbul8.src = 'pics/bul1.gif';
  var overbul8 = new Image(); overbul8.src = 'pics/bul2.gif';

  var outbul9 = new Image(); outbul9.src = 'pics/bul1.gif';
  var overbul9 = new Image(); overbul9.src = 'pics/bul2.gif';

  var outbul10 = new Image(); outbul10.src = 'pics/bul1.gif';
  var overbul10 = new Image(); overbul10.src = 'pics/bul2.gif';
  
  var outbut111 = new Image(); outbut111.src = 'pics/111_1.gif';
  var overbut111 = new Image(); overbut111.src = 'pics/111_2.gif';
  var upbut111 = new Image(); upbut111.src = 'pics/111_2.gif';
  var downbut111 = new Image(); downbut111.src = 'pics/111_3.gif';
}

function turnOff1(imgName) {
  if (document.images) 
    document[imgName + "p"].src = eval('out' + imgName + '.src')
}

function turnOn1(imgName) {
  if (document.images) 
    document[imgName + "p"].src = eval('over' + imgName + '.src')
}

function turnOff(imgName) {
  if (document.images)
    document[imgName + "p"].src = eval('up' + imgName + '.src')
}

function turnOn(imgName) {
  if (document.images) 
    document[imgName + "p"].src = eval('down' + imgName + '.src')
}