function showLink(which){
	
	if (document.getElementById(which)!=null) {
		//MM_showHideLayers(which,'','show');
		if (document.getElementById(which).style.display == 'block'){
			document.getElementById('h3'+which).className='piu';
			document.getElementById(which).style.display='none';			
		}
		else{
			document.getElementById('h3'+which).className='meno';
			document.getElementById(which).style.display='block';
			
		}
	}
}