function hide_sub_all()
{
	var sub_all = document.getElementById( 'sub_all' );
	var subs = sub_all.getElementsByTagName( 'div' );
	
	for( i = 0; i < subs.length; i++ ) {
		if( subs[i].className == 'subtop' ) {
			subs[i].style.display = 'none';
		}
	}
}

function show_sub( id )
{
	var content = document.getElementById( id );
	content.style.display = 'block';	
}

function Show( id )
{
	var content = document.getElementById( id );
	content.style.display = 'block';
	content.style.visibility = 'visible';	
}

function Hide( id )
{
	var content = document.getElementById( id );	
	content.style.visibility = 'hidden';
	content.style.display = 'none';
}