//note: userAgent in IE7 WinXP returns: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)
function BrwoserCheck()
{
	
	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 == 6)
	 {
		var test = document.getElementsByTagName('li');
		for (i = 0; i < test.length; i++)
		{
			//alert();
			if (test[i].className ==  'top')
				test[i].className = 'topIE6'
			else if (test[i].className ==  'middle')
				test[i].className = 'middleIE6'
			else if (test[i].className ==  'last')
				test[i].className = 'lastIE6'
		}
	 }
	}
}