var browser		= navigator.appName
var ver			= navigator.appVersion
var thestart	= parseFloat(ver.indexOf("MSIE"))+1
var brow_ver	= parseFloat(ver.substring(thestart+4,thestart+7))

if ((browser=="Microsoft Internet Explorer") && (brow_ver < 7)) 
{
window.location="http://www.mf3.ch/browser.html"; 
}