// _w : which ID (1) or (2)
// _h : (h)ide or (s)how
function riquadro(_w,_h) {
    if (_h=='s') {
	eval("document.getElementById('"+_w+"').style.visibility='visible';");
	eval("document.getElementById('"+_w+"').style.position='relative';");
	eval("document.getElementById('"+_w+"').style.display='inline';");
	}
    if (_h=='h') {
	eval("document.getElementById('"+_w+"').style.visibility='hidden';");
	eval("document.getElementById('"+_w+"').position='absolute';");
	eval("document.getElementById('"+_w+"').style.display='none';");
	}
}

function tutti(_w,_h) {
_x=0;
while (_x<_w) {
	var corpo="corpo"+_x;
 	var oggetto=document.getElementById(corpo); 
    if (oggetto!=null) { 
    if (_h=='h') { 
	eval("document.getElementById('corpo"+_x+"').style.visibility='hidden';");
	eval("document.getElementById('corpo"+_x+"').position='absolute';");
	eval("document.getElementById('corpo"+_x+"').style.display='none';");
	}
	}
	_x++;
}	
}

function apripop(apri) {
   var w = 400;
   var h = 250;
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
      window.open(apri,"","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l + ", scrollbars=yes, resizable=yes ");
 }