curimage='home';
function SwapImage( newid ) {
	document.getElementById( curimage ).style.display='none';
	document.getElementById( newid ).style.display='inline';
	curimage=newid;
	}
function mainNavOn( target_id ) {
	targetOn = document.getElementById( target_id + '-on' );
	targetOff = document.getElementById( target_id + '-off' );
	if( targetOn && targetOff ) {
		targetOn.style.display = 'inline';
		targetOff.style.display = 'none';
	}
}
function mainNavOff( target_id ){
	targetOn = document.getElementById( target_id + '-on' );
	targetOff = document.getElementById( target_id + '-off' );
	if( targetOn && targetOff ) {
		targetOn.style.display = 'none';
		targetOff.style.display = 'inline';
	}
}
function leftNavToggle( target_id ) {
	if( target_id == 'lnav_print' ) {
		document.getElementById( 'lnav_web' ).style.display = 'none';
	} 
	if(target_id == 'lnav_web') {
		document.getElementById( 'lnav_print' ).style.display = 'none';
	}
	target = document.getElementById( target_id );
	if( target.style.display == 'none' ) {
		target.style.display = 'inline';
	} else {
		target.style.display = 'none';
	}
}