IE = navigator.appName=="Microsoft Internet Explorer";
			NS = navigator.appName=="Netscape";
			bVer = parseInt(navigator.appVersion);
			
			var newWin=null;
			
			function pop(loc,name, width, height) {
				if (IE){
					//width = width-16;
					//height = height-16;
				}

				var _params = "width="+width+",innerWidth="+width+",height="+height+",innerHeight="+height+",scrollbars=yes,fullscreen=no,toolbar=no,status=no,menubar=no,resizable=no,directories=no,location=no'";
		
				// Centra la finestra se è supportata la versione 1.2 di JavaScript
				if (bVer >= 4) {
					_left = ( (screen.width-width) >>1 );
					_top = ( (screen.height-height) >>1 );
				} else {
					_left = ( (800-width) >>1 );
					_top = ( (600-height) >>1 );
				}
				
				if (IE) _params += ",top=" + _top + ",left=" + _left;
				else if (NS) _params += ",screenX=" + _left + ",screenY=" + _top ;
		
				newWin = window.open(loc, name, _params);
				if ( newWin!=null && !(IE && bVer<5) ) newWin.focus(); // MSIE4 DOESN'T FOCUS WINDOWS
			}