function apri_finestra(url_pag,windowsname,dime,dimes,left,top,doret) {
	var hWnd=window.open(url_pag,windowsname,"toolbar=no,width="+dime+",height="+dimes+",left="+left+",top="+
		top+",directories=no,status=no,statusbar=no,resizable=1,menubar=no,scrollbars=yes,location=no");
	if(!hWnd.opener) 
		hWnd.opener=self;
	if(hWnd.focus!=null) 
		hWnd.focus();
	if(doret)
		return hWnd;
}