var IE = 1; 
var netscape = 1; 
browserName = navigator.appName.substring(0,8); 
browserVer = parseInt(navigator.appVersion); 
if (browserName == "Microsof" && browserVer <= 3)
{ IE = 0; }
function finestra01(url) {
	if(IE && netscape) 
	{ 
		sorgente=window.open(url,'finestra01','height=450,width=400,resizable=no,scrollbars=yes');
		sorgente.focus();
	}
	else
	{
		sorgente=window.open(url,'finestra01','height=450,width=400,resizable=no,scrollbars=yes');
	}
	
}