if( typeof(lang_url_prefix) == 'undefined'  )
    var lang_url_prefix = '';

if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
 var ieversion = new Number(RegExp.$1); // capture x.x portion and store as a number
 if (ieversion < 7)
	document.location = lang_url_prefix + "/main/restriction";
}