function check() {
 this.ver = parseInt(navigator.appVersion);
 this.tip = navigator.appName;
}


function winopen(desktopURL,w,h)	{

	var browser = new check();
	var ns = (browser.tip=='Netscape') ? 1 : 0;
	var top,left;
	x = 400;
	y = 300;
	
	

	if (ns) {
		top = "screenY=" + y;
		left = "screenX=" + x;
	} else {
		top = "top=" + y;
		left = "left=" + x;		
	}

	// calcolo top left
	
	
	param = "toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no"+",width="+w+",height="+h+","+top+","+left;
    desktop = window.open(desktopURL, "_blank",param);
	desktop.opener=top;
}