function isOperaBrowser(sUserAgent)
{
	return sUserAgent.indexOf("Opera") > -1;
}

function isSafariBrowser(sUserAgent)
{
	if(isKHTMLBrowser(sUserAgent))
		return sUserAgent.indexOf("AppleWebKit") > -1;
}

function isKHTMLBrowser(sUserAgent)
{
	return sUserAgent.indexOf("KHTML") > -1 || sUserAgent.indexOf("Konqueror") > -1 || sUserAgent.indexOf("AppleWebKit") > -1;
}

function isIEBrowser(sUserAgent)
{
	return sUserAgent.indexOf("compatible") > -1 && sUserAgent.indexOf("MSIE") > -1 && !isOperaBrowser(sUserAgent);
}

function isFirefoxBrowser(sUserAgent)
{
	return sUserAgent.indexOf("Firefox") > -1;
}