//detection du navigateur

function detection()
{
   var IE6 = false, IE7 = false,
   FIREFOX2 = false, FIREFOX = false,
   NETSCAPE7 = false, NETSCAPE = false,
   OPERA9 = false, OPERA = false,
   AUTRE = false;
   var strChUserAgent = navigator.userAgent;
   var intSplitStart = strChUserAgent.indexOf("(",0);
   var intSplitEnd = strChUserAgent.indexOf(")",0);
   var strChStart = strChUserAgent.substring(0,intSplitStart);
   var strChMid = strChUserAgent.substring(intSplitStart, intSplitEnd);
   var strChEnd = strChUserAgent.substring(strChEnd);
   if(strChMid.indexOf("MSIE 7") != -1)
		return '.png'
   else if(strChMid.indexOf("MSIE 6") != -1)
   	return '.jpg'
   else if(strChEnd.indexOf("Firefox/2") != -1)
   	return '.png'
   else if(strChEnd.indexOf("Firefox") != -1)
   	return '.png'
   else if(strChEnd.indexOf("Netscape/7") != -1)
   	return '.png'
   else if(strChEnd.indexOf("Netscape") != -1)
   	return '.png'
   else if(strChStart.indexOf("Opera/9") != -1)
   	return '.png'
   else if(strChStart.indexOf("Opera") != -1)
   	return '.png'
   else
   	return '.png'
}

function imagetitre()
{
alert(detection());
	var url="http://www.webagoo.eu/bibliotheques/39925/interface/images/titre"+detection();
	$('imgtitre').scr=url;
}