function getInternetExplorerVersion() {
  var rv = -1;
  if (navigator.appName == 'Microsoft Internet Explorer')  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}

var ver=getInternetExplorerVersion();

var audio_playing=0;
var msie=0;
var msie9=0;

if (ver>-1) {
	msie=1;
	 if (ver>=9.0) {
		// msie9=1; 
	 }
}


function ton(x) {
	
	if (micms_sound!=1) {
			
			return;
	}
	
	if (audio_playing==1) {
			// return;
	}
	
	audio_playing=1;
	
	if (msie==1) {
		
		y=x.replace(".ogg",".mp3");
		
	} else {
		
		y=x;
		
	}
	
	if ( (msie==1) && (msie9!=1) ) {
		
		document.all.sound.src = y;

		
	} else {
		
		if (e=document.getElementById("ton")) {
			
			e.src=y;
			e.play();
		}
	}
}

function audio_stopp() {
	audio_playing=0;	
}
function mi_audio() {
	var e=document.getElementById("audioimg");
	if (micms_sound==1) {
		micms_sound=0;
		e.src="/images/sound_muted.png";
	} else {
		micms_sound=1;
		e.src="/images/sound.png";
	}
}