function showLayer(id)
{
  if (document.getElementById(id)) document.getElementById(id).style.display = 'auto';
}

function hideLayer(id)
{
  if (document.getElementById(id)) document.getElementById(id).style.display = 'none';
}

function toggleLayer(id)
{
  if (document.getElementById(id))
  {
    if (document.getElementById(id).style.display == 'none')
    {
      showLayer(id);
    } else {
      hideLayer(id);
    }
  }
}

function toggelFullScreen()
{
 if ( $('#gamePlace').hasClass('fullScreen') )
 	{
	 	$('#gamePlace').removeClass('fullScreen');
	 	$('#fsbtn').removeClass('fulscreenBtn');
	 	$('body').css('overflow', 'auto');
	} else {
		$('#gamePlace').addClass('fullScreen');
	 	$('#fsbtn').addClass('fulscreenBtn');
	 	$('body').css('overflow', 'hidden');
	 	window.scrollTo(0,0);
	}
}

function keyPressHandler(e) {
      var kC  = (window.event) ?    // MSIE or Firefox?
                 event.keyCode : e.keyCode;
      var Esc = (window.event) ?
                27 : e.DOM_VK_ESCAPE // MSIE : Firefox
      if(kC==Esc)
      {
		if ($('#gamePlace').hasClass('fullScreen'))
		{
		 	$('#gamePlace').removeClass('fullScreen');
		 	$('body').css('overflow', 'auto');
		}
      }
   }
$(document).ready(function(){
	$('body *').keypress(keyPressHandler)
});