jPlayer - detect browser and set fallback when html 5 video not supported

jplayer-fallback-settings.js

<script>
/****************************************************************************************************
   Checking for old IE and Firefox versions and defaulting to flash with html 5 fallback
   Not serving .ogg file so Firefox requires Flash
   Flash does not like dimensions set to auto, so set these to 100% when using flash for playback
****************************************************************************************************/

    $(document).ready(function(){
		var ua = $.browser;
		var uaVersion = ua.version.slice(0,3);
		var videoWidth = "auto";
		var videoHeight = "auto";
		var fallbackSetting = "html, flash";
		var isOldIE = ua.msie && uaVersion < 9;
		var isFirefox = ua.mozilla;
		
		if (isOldIE || isFirefox)
		{
			videoWidth = "100%";
			videoHeight = "100%";
		}
		
		if (isFirefox) {
			fallbackSetting = "flash, html";
		}
		
      $("#jquery_jplayer_1").jPlayer({
        ready: function () {
          $(this).jPlayer("setMedia", {
            m4v: "/path-to-my.mp4",
            poster: "/path-to-my-poster.jpg"
          });
        },
        swfPath: "/behavior",
        supplied: "m4v",
		size: {
				width: videoWidth,
				height: videoHeight,
				cssClass: "jp-video-base"
			},
		sizeFull: {
				cssClass: "jp-video-full"
			},
		solution: fallbackSetting
      });
    });
  </script>