<!-- Begin
function checkMetro(field, i) {

if (i == 0) { //All areas.
if (field[0].checked == true) {
for (i = 1; i <= 43; i++)
field[i].checked = true;
}
else 
if (field[0].checked == false) {
for (i = 1; i <= 43; i++)
field[i].checked = false;
    }
  }
else{
field[0].checked = false;
}
}

function checkMetro1(field, i) {
if (i == 1) { //
if (field[1].checked == true) {
for (i = 2; i <= 3; i++)
field[i].checked = true;
}
else 
if (field[1].checked == false) {
for (i = 2; i <= 3; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[1].checked = false;
}
}
function checkMetro2(field, i) {
if (i == 4) { 
if (field[4].checked == true) {
for (i = 5; i <= 8; i++)
field[i].checked = true;
}
else 
if (field[4].checked == false) {
for (i =5 ; i <= 8; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[4].checked = false;
}
}
function checkMetro3(field, i) {
if (i == 9) { 
if (field[9].checked == true) {
for (i = 10; i <= 15; i++)
field[i].checked = true;
}
else 
if (field[9].checked == false) {
for (i = 10; i <= 15; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[9].checked = false;
}
}

function checkMetro4(field, i) {
if (i == 16) { 
if (field[16].checked == true) {
for (i = 17; i <= 22; i++)
field[i].checked = true;
}
else 
if (field[16].checked == false) {
for (i = 17; i <= 22; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[16].checked = false;
}
}
function checkMetro5(field, i) {
if (i == 23) { 
if (field[23].checked == true) {
for (i = 24; i <= 26; i++)
field[i].checked = true;
}
else 
if (field[23].checked == false) {
for (i = 24; i <= 26; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[23].checked = false;
}
}
function checkMetro6(field, i) {
if (i == 27) { 
if (field[27].checked == true) {
for (i = 28; i <= 38; i++)
field[i].checked = true;
}
else 
if (field[27].checked == false) {
for (i = 28; i <= 38; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[27].checked = false;
}
}
function checkMetro7(field, i) {
if (i == 39) { 
if (field[39].checked == true) {
for (i = 40; i <= 43; i++)
field[i].checked = true;
}
else 
if (field[39].checked == false) {
for (i = 39; i <= 43; i++)
field[i].checked = false;
field[0].checked = false;
    }
  }
else{
field[0].checked = false;
field[39].checked = false;
}
}

function checkPr(field, i) {
if (i == 0) { 
if (field[0].checked == true) {
for (i = 1; i <= 6; i++)
field[i].checked = false;
}
  }
else{
field[0].checked = false;
}
}
function checkBd(field, i) {
if (i == 0) { //Bedroom
if (field[0].checked == true) {
for (i = 1; i <= 5; i++)
field[i].checked = false;
}
  }
else{
field[0].checked = false;
}
}

function checkBt(field, i) {
if (i == 0) { //Bath
if (field[0].checked == true) {
for (i = 1; i <= 5; i++)
field[i].checked = false;
}
  }
else{
field[0].checked = false;
}
}
//  End -->