function fNav1_HidePipe() {
	if (document.getElementById("boxMainNav").firstChild ) {
		var bIsCurrent = false;
		if (document.getElementById("boxMainNav").firstChild.className == 'Menu1current')
			bIsCurrent = true;
		if( bIsCurrent )
			document.getElementById("boxMainNav").firstChild.className = 'Menu1acurrent';
		else
			document.getElementById("boxMainNav").firstChild.className = 'Menu1a';
	}
}