function download() {
	var navigateur = navigator.userAgent;
	var version = navigator.appVersion;
	
	var firefox = navigateur.indexOf('Firefox');
	var ie = navigateur.indexOf('MSIE');
	
	if(firefox > 0) {
		var os = version.substring(version.indexOf('(')+1, version.indexOf(';'));

		if(os == 'Windows') {
			var links = document.getElementsByName('dl_link');
			for (var i=0; i<links.length; i++) {
				links[i].href = './telechargement_confirme';
			}
		} else {
			var links = document.getElementsByName('dl_link');
			for (var i=0; i<links.length; i++) {
				if(i==0) {
					links[i].innerHTML = '<span style=\'text-align:center;\'>Incompatible avec votre système.</span>';
				}
				links[i].href = '#';
			}
		}

	} else if(ie > 0) {
		var links = document.getElementsByName('dl_link');
		for (var i=0; i<links.length; i++) {
			links[i].href = './telechargement_confirme';
		}
	} else {
		var links = document.getElementsByName('dl_link');
		for (var i=0; i<links.length; i++) {
			if(i==0) {
				links[i].innerHTML = '<span style=\'text-align:center;\'>Incompatible avec votre système.</span>';
			}
			links[i].href = '#';
		}
	}
}