$var = false;$function=false;$function_id="";$function_src="";$function_src2="";
	function buttonbackchange($id,$src,$src2){
		$var=true;$function_id=$id;$function_src=$src;$function_src2=$src2;$function="buttonbackchange_do();";window.setTimeout($function, 1000);
	}
	function buttonbackchange_do(){
		if($var==true){$var = false;$function=false;document.getElementById('img_navi_'+$function_id).src=$function_src;document.getElementById('img_balken').src=$function_src2;}
	}
	function buttonchange($id,$src,$src2){
		if($function!=false){buttonbackchange_do();}$var=false;document.getElementById('img_navi_'+$id).src=$src;document.getElementById('img_balken').src=$src2;
	}