var oknoMapa = null;
var oknoUdaje = null;

function windowMapa()
{
	if ( oknoMapa != null ) oknoMapa.close();
	oknoMapa = window.open('mapa.php?X=' + window.document.formular.x.value + '&Y=' + window.document.formular.y.value ,'oknoMapa','width=570, height=620, left=0, top=0');
}

function help()
{
	if ( oknoUdaje != null ) oknoUdaje.close();
	oknoUdaje = window.open('udaje.html','oknoUdaje','width=300, height=620, left=580, top=0, scrollbars=yes');
}

function RGB2HTML(red, green, blue)
{
    var decColor = red + 256 * green + 65536 * blue;
    return decColor.toString(16);
}

var sign = 1;
var time = 500;
var speed = 50;
var startColor = 63;
var endColor = 192;
var dColor = Math.floor(100 * (endColor-startColor) / 1000);
var color = startColor;

function blinking(){
  color += sign * dColor;
  if ( sign > 0 && color > endColor){
    sign = -1;
    color = endColor;
  }
  else if (sign < 0 && color < startColor){
    sign = 1;
    color = startColor;
  }

  document.getElementById("akceNadpis").style.color = '#' + RGB2HTML(color,color,color);
  setTimeout('blinking()',speed);
}

function taust(asi1, col1, col2, name)
{ 
	asi1.style.backgroundColor = col1; 
	asi1.style.color = col2;
	if ( name ) document.getElementById(name).style.color = col2;
}

function zobrazSkryj(id)
{
	  var Browser = navigator.appName;
      var Version = parseInt(navigator.appVersion);
      el=document.getElementById(id).style;
      if (Browser == "Netscape" & Version >= 4)
          el.display=(el.display == 'table-row')?'none':'table-row';
      if (Browser == "Microsoft Internet Explorer" & Version >= 4)
          el.display=(el.display == 'block')?'none':'block';	
}