var supportedBrowsers  	= {	Safari	: 120,	// 1.2
							Firefox	: 1.5,
							IE		: 6.0	};
							
var unsupportedMessage 	= "<div class='unsupportedBrowserDiv'><img src='/images/warning.gif' style='float: left; padding-right: 20px;'/> <br/> We're sorry, the <a href='javascript: alert(navigator.userAgent);'>browser version</a> you are using is not supported by easyCBM. <br/>Please see our list of <a href='/info/requirements.php'>Supported Browsers</a>. <div style='clear: both;'></div></div>";


checkSupportedBrowser(supportedBrowsers, unsupportedMessage);



function checkSupportedBrowser(supportedBrowsers, unsupportedMessage){
	if(!isSupported(supportedBrowsers))
		showUnsupportedMessage(unsupportedMessage);
}

function isSupported(supportedBrowsers){
	var agent 		= navigator.userAgent;
	var supported 	= false;
	var version 	= false;
	
	var isSafari 	= (agent.match(/safari/i)) ? true : false;
	var isFirefox 	= (agent.match(/firefox/i)) ? true : false;
	var isIE	 	= (agent.match(/msie/i)) ? true : false;
	var isOpera		= (agent.match(/opera/i)) ? true : false;
	

	if(isSafari)
		version 	= parseFloat(agent.match(/safari\/([\d\.]+)/i)[1]);
	else if(isFirefox)
		version 	= parseFloat(agent.match(/firefox\/([\d\.]+)/i)[1]);
	else if(isIE)
		version 	= parseFloat(agent.match(/msie ([\d\.]+)/i)[1]);
	else if(isOpera)
		version 	= parseFloat(agent.match(/opera\/([\d\.]+)/i)[1]);
		
		
	if(isSafari 	&& typeof supportedBrowsers.Safari	!= 'undefined' && supportedBrowsers.Safari 	<= version)
		return true;
	if(isFirefox 	&& typeof supportedBrowsers.Firefox	!= 'undefined' && supportedBrowsers.Firefox <= version)
		return true;
	if(isIE 		&& typeof supportedBrowsers.IE		!= 'undefined' && supportedBrowsers.IE 		<= version)
		return true;
	if(isOpera 		&& typeof supportedBrowsers.Opera	!= 'undefined' && supportedBrowsers.Opera 	<= version)
		return true;
		
	return false;
}

function showUnsupportedMessage(unsupportedMessage){
	document.write(unsupportedMessage);
}