function detectBrowser()
{
var browser = navigator.appName;
var ua = navigator.userAgent;
var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
{if (re.exec(ua) != null)
	  rv = parseFloat( RegExp.$1 );}		

if ((browser=="Netscape"||browser=="Microsoft Internet Explorer") && (rv>=7))
  {
  }
else
  {
  alert("Please upgrade your browser! Website will not display properly!");
  }
}