function set_image_src(id,source){document.getElementById(id).src=source;}
function set_display_block(id){document.getElementById(id).style.display='block';}
function set_display_none(id){document.getElementById(id).style.display='none';}
function set_class(id,klasse){document.getElementById(id).setAttribute("class",klasse);}

var sound_status=1;
function switch_sound()
{
	if(sound_status==1)
	{
		document.getElementById('musik').pause();
		set_image_src('sound_image','../../../images/global/sound_off.png');
		sound_status=0;
	}
	else
	{
		document.getElementById('musik').currentTime = 10;
		document.getElementById('musik').play();
		set_image_src('sound_image','../../../images/global/sound_on.png');
		sound_status=1;
	}
}

function set_sound_image(a)
{
	if(sound_status==1)
	{
		if(a==0)
		{
			set_image_src('sound_image','../../../images/global/sound_on.png');
		}
		else
		{
			set_image_src('sound_image','../../../images/global/sound_off.png');
		}
	}
	else
	{
		if(a==0)
		{
			set_image_src('sound_image','../../../images/global/sound_off.png');
		}
		else
		{
			set_image_src('sound_image','../../../images/global/sound_on.png');
		}
	}	
}

function sound_check()
{
	if (!document.createElement('audio').canPlayType)
	{
		set_display_none('sound_link');
		alert("Hey, Dein Browser kann keinen Sound abspielen. Schade...");
	}
}