var strBaseId = "disp_obj";
function DispObj(num)
{
	if( !(document.all || document.getElementById) )
	{
		alert(strErrMes);
		return;
	}

	var id = strBaseId.concat(num);

	var objTarget = null;
	if( document.all )
	{
		objTarget = document.all(id).style;
	}else{
		objTarget = document.getElementById(id).style;
	}

	if( objTarget.display.length < 1 )
	{
		objTarget.display = "none";
	}

	if( objTarget.display == "none" )
	{
		objTarget.display = "block";
	}else{
		objTarget.display = "none";
	}
}

//change text
function shBlock( xnum ){

	if( xnum == 0 ){
	
	document.getElementById( 'show_lyric' ).style.display= "block";
	document.getElementById( 'hide_lyric' ).style.display= "none";

	} else if( xnum == 1 ){
		
	document.getElementById( 'show_lyric' ).style.display= "none";
	document.getElementById( 'hide_lyric' ).style.display= "block";
	
	}

}