function open_spec()
{	win=window.open("spec_a.html","spec","width=1218, height=1000, menubar=no, toolbar=no, location=no, directories=no, status=no, resizable=yes, scrollbars=yes");
	if (win.opener==null) win.opener=window;
	//window.blur();
	win.focus();
}


function nav(url)
{	window.blur();
	if (window.opener!=null)
	{	window.opener.location=url;
		window.opener.focus();
	}
	else
	{	window.open(url,"","");
	}
}