function detect_browser()
{
	var browser_name = navigator.userAgent;
	// We have to check for Opera first because
	// at the beginning of the userAgent variable
	// Opera claims it is MSIE. 
	
	if (browser_name.indexOf("Opera")!= -1)
		browser_name = "Opera";
	else if (browser_name.indexOf("Firefox")!= -1)
		browser_name = "Firefox";
	else if (browser_name.indexOf("MSIE")!= -1)
		browser_name = "MSIE";
	else if (browser_name.indexOf("Netscape")!= -1)
		browser_name = "Netscape";
	else if (browser_name.indexOf("Safari")!= -1)
		browser_name = "Safari";
	
	return browser_name;
	

} // end function detect_browser()
function ChangeTrack (media)
{
var player = document.getElementById('player'); 

if (detect_browser() == "MSIE" || 
		detect_browser() == "Netscape")
{ 
player.innerHTML = '<object id="sound"' 
+ 'classid="clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6"'
+ 'codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701"'
+ 'standby="Loading Microsoft® Windows® Media Player components..."'  
+ 'type="application/x-oleobject" width="160" height="44">'                
+ '<param name="url" value="'+media+'">'      
+ '<param name="volume" value="100">'            
+ '<embed id="sound" type="application/x-mplayer2" src="'+media+'"' 
+ 'classid="clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6"'
+ 'pluginspage="http://www.microsoft.com/Windows/MediaPlayer/"'
+ 'type="application/x-mplayer2"'
+ 'url="'+media+'"' 
+ 'volume="100"' 
+ 'width="160" height="44">'               
+ '<\/embed>'
+ '<\/object>';
}
else // if Safari or Firefox, then load Quicktime controls
{
player.innerHTML = '<OBJECT '
+ 'CLASSID="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" '
+ 'WIDTH="160"HEIGHT="144" ID="sound"'
+ 'CODEBASE="http://www.apple.com/qtactivex/qtplugin.cab">'
+ '<PARAM name="SRC" VALUE="'+media+'">'
+ '<PARAM name="AUTOPLAY" VALUE="true">'
+ '<PARAM name="CONTROLLER" VALUE="true">'
+ '<PARAM name="VOLUME" VALUE="100">'
+ '<PARAM name="ENABLEJAVASCRIPT" VALUE="true">'
+ '<PARAM name="TYPE" VALUE="audio/wav">'
+ '<embed classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"' 
+ 'name="sound"'
+ 'id="sound"' 
+ 'src="'+media+'"' 
+ 'pluginspage="http://www.apple.com/quicktime/download/"'
+ 'volume="100"' 
+ 'enablejavascript="true" '
+ 'type="audio/wav" '
+ 'height="16" '
+ 'width="200"'
+ 'autostart="true"'
+ '> </embed>'
+ '</OBJECT>';
}
}