function get_current_path()
{
var path = document.URL;
var pos1 = path.indexOf("//") + 2;
var pos2 = path.lastIndexOf("/");
return path.substring(pos1, pos2);
}

function opn(URL,winname)
{
	window.open('','newwin','toolbar=0,status=0,location=0,menubar=0,scrollbars=0,resizable=0,width=340,height=280');
	document.f1.target = "newwin";
	document.f1.path.value = get_current_path();
	document.f1.filename.value = URL;
	document.f1.wintitle.value = winname;
	document.f1.submit();
//alert(document.f1.path.value + "," + document.f1.filename.value);
}