function showTempChart(thisTemp)
{
  // return all buttons to inactive
  document.getElementById("imgTempF").src = "images/about/temp-f-but-off.gif";
  document.getElementById("imgTempC").src = "images/about/temp-c-but-off.gif";

  // hide all chart divs
  document.getElementById("divTempF").style.display = "none";
  document.getElementById("divTempC").style.display = "none";
 
  if (thisTemp == "C")
  {
    document.getElementById("imgTempC").src = "images/about/temp-c-but-on.gif";
    document.getElementById("divTempC").style.display = "block";
  }
  else // default to F
  {
    document.getElementById("imgTempF").src = "images/about/temp-f-but-on.gif";
    document.getElementById("divTempF").style.display = "block";
  }
}

function mouseOverClimate(myImage)
{
  if (myImage == "imgTempF") { overImage = "images/about/temp-f-but-on.gif"; }
  else if (myImage == "imgTempC") { overImage = "images/about/temp-c-but-on.gif"; }
  document.getElementById(myImage).src = overImage;
}

function mouseOutClimate(myImage)
{
  outImage = "images/about/";
  if (myImage == "imgTempF" && document.getElementById("divTempF").style.display == "block") { outImage += "temp-f-but-on.gif"; }
  else if (myImage == "imgTempF" && document.getElementById("divTempF").style.display == "none") { outImage += "temp-f-but-off.gif"; }
  else if (myImage == "imgTempC" && document.getElementById("divTempC").style.display == "block") { outImage += "temp-c-but-on.gif"; }
  else if (myImage == "imgTempC" && document.getElementById("divTempC").style.display == "none") { outImage += "temp-c-but-off.gif"; }
  
  document.getElementById(myImage).src = outImage;
}

function showCommunity(mapID)
{
  //centre on screen
  getWindowWidth();
  var winLeft = (x / 2) - 250;
  var winTop = (y / 2) - 125;
  //comPopup = (window.open('popups/communities.php?mapID='+mapID,'comPopup','width=600,height=228,resizable=false,scrollbars=false,status=false,titlebar=false,toolbar=false,left='+winLeft+',top='+winTop) || window).focus();
  comPopup = window.open('popups/communities.php?mapID='+mapID,'comPopup','width=500,height=250,resizable=0,scrollbars=0,status=0,titlebar=0,toolbar=0,left='+winLeft+',top='+winTop);
  if (window.focus) { comPopup.focus(); }
}

function hideCommunity(divID) { document.getElementById(divID).style.display = "none"; }