function set_horoffset(n){
	horoffset = n;
}

function verifica(n){
	if (document.getElementById(n).attachEvent){document.getElementById(n).attachEvent("onclick",show_e);}
	else{document.getElementById(n).onclick = show_n;}
}

function show_n(e){
	var abid = Number(e.target.id.replace("ab",""));
	if (ab[abid-1] != ""){document.getElementById('ab_here').innerHTML = ab[abid-1];}
	else {document.getElementById('ab_here').innerHTML = "Abstract non disponibile";}
	document.getElementById('box').style.left = e.pageX+horoffset+'px';
	document.getElementById('box').style.top = 13-180+e.pageY+'px';
	document.getElementById('box').style.display = '';
}

function show_e(e){
	var abid = Number(e.srcElement.id.replace("ab",""));
	if (ab[abid-1] != ""){document.getElementById('ab_here').innerHTML = ab[abid-1];}
	else {document.getElementById('ab_here').innerHTML = "Abstract non disponibile";}
	document.getElementById('box').style.left = e.x+horoffset+'px';
	document.getElementById('box').style.top = 13-180+e.y+'px';
	document.getElementById('box').style.display = ''
}

function chiudi(){
	document.getElementById('box').style.display = 'none';
}