var indici_fin=new Array();

function appartiene(val,arr) {
	for (var i=0; i < arr.length; i++) {if (arr[i] === val) {return true;} }
	return false;
                    } 

function apri(n,url,w,h,scr) {
	t = (screen.height - h) / 2;
	l = (screen.width - w) / 2; 
	newin = window.open(url,"fin"+n,"scrollbars="+scr+",resizable=yes, width="+ w +",height="+ h +",top="+ t + ", left="+ l +",status=no,location=no,toolbar=no");
	newin.focus();
	eval('fin'+n+'=newin');
                    if( ! appartiene(n,indici_fin)) indici_fin.push(n);
	} 
	
function chiudi_finestra(n) {
                   eval('fin'+n+'.close()')
                   }

function chiudi_finestre() {
                   for(var i in indici_fin){chiudi_finestra(indici_fin[i])}
                   }

function ogg(id) {
if (document.getElementById)
   return document.getElementById(id) ;
else if (document.layers)
   return document.layers[id] ;
else if (document.all)
   return document.all[id] ;
else { alert("nessun supporto per DHTML") ; return false; }
}