function getBrowsertype(){
	var browsertype;
	if (navigator.userAgent.indexOf("Opera") != -1)
	{
	   browsertype = "Opera";
	}
	else if (navigator.appName.indexOf("Internet Explorer") != -1)
	{
	   browsertype = "MSIE";
	}
	else if (navigator.userAgent.indexOf("Firefox") != -1)
	{
	   browsertype = "Firefox";
	}
	else if (navigator.userAgent.indexOf("Safari") != -1)
	{
	   browsertype = "Safari";
	}
	else if (navigator.userAgent.indexOf("Netscape") != -1)
	{
	   browsertype = "Netscape";
	}
	else
	{
	   browsertype = "unknown";
	}
return browsertype;
}