// JavaScript Document
function showSub( id )
{
	hideAllSub();
	obj = document.getElementById( id );
	obj.style.display = "block";
}
function hideSub( id )
{
	obj = document.getElementById( id );
	obj.style.display = "none";
}
function hideAllSub()
{
	hideSub( 'sub1' );
	hideSub( 'sub2' );
	hideSub( 'sub3' );
	hideSub( 'sub4' );
	hideSub( 'sub5' );
}