// JavaScript for the NNM Pace Calculator.
// Anders Gustafson (www.nemonisimors.com).



function fixPaceBlock() {
  var paceUnit = document.getElementById( "paceUnit" ).value;
  var distancePerTime = true;
  
  // Check if it is a "mm:ss / distance" pace.
  if ( paceUnit == "/km" || paceUnit == "/mi" || paceUnit == "/nmi" || paceUnit == "/100m" || paceUnit == "/200m" || paceUnit == "/400m" || paceUnit == "/500m" ) {
    distancePerTime = false;
  }
  
  if ( distancePerTime ) {
    document.getElementById( "paceDecimal" ).disabled = false;
    document.getElementById( "paceMinutes" ).disabled = true;
    document.getElementById( "paceSeconds" ).disabled = true;
    document.getElementById( "paceDecimal" ).style.display = "inline";
    document.getElementById( "paceMinSecBlock" ).style.display = "none";
    document.getElementById( "paceLabel" ).innerHTML = "Pace <span class='info'>(decimal)</span>";
  } else {
    document.getElementById( "paceDecimal" ).disabled = true;
    document.getElementById( "paceMinutes" ).disabled = false;
    document.getElementById( "paceSeconds" ).disabled = false;
    document.getElementById( "paceDecimal" ).style.display = "none";
    document.getElementById( "paceMinSecBlock" ).style.display = "inline";
    document.getElementById( "paceLabel" ).innerHTML = "Pace <span class='info'>(mm:ss)</span>";
  }
  
  //alert("Hej " + paceUnit + " - " + distancePerTime );

}