function check_browser()
{
// Is it IE or Nav and atleast version 4.0
var version = parseInt(navigator.appVersion) 
// Returns 4 for 4.x browsers
var isIE = navigator.appVersion.indexOf("MSIE")>0	 
var isIE4 = isIE && version>=4;
if (isIE4)
{
	var x = 1;
}
else
{
window.location.href='../../../lumbermens/invalid_browser.htm';
}
}