possible option for jPlayer fade-in/fade-out

gistfile1.txt

var vol = 20; 
var t = 0; 

        function playSample(id) { 
                $("#player").stop(); 
                vol = 20; 
                stopSample(); 
                $("#player").setFile("yourfile.mp3"); 

                fadeIn(); 
                $("#player").play(); 
        } 

        function stopSample(id, fadeout) { 
                clearTimeout(t); 

                //Set fadeout = true in the function call: <a href="#" onClick="stopSample(23, true);">Stop</a> 
                if(fadeout == true) {fadeOut();} 
        } 

        $("#player").jPlayer({ 
                swfPath: "swfpath"; 
        }); 

        $("#player").onSoundComplete(function() { 
                stopSample(); 
        }); 

        function fadeIn() { 
                if(vol < 150) { 
                        $("#player").volume(vol); 
                        t = setTimeout("fadeIn()", 200); 
                        vol = vol + 10; 
                } else { 
                        clearTimeout(t); 
                        vol = 150; 
                } 
        } 

        function fadeOut() { 
                if(vol > 0) { 
                        $("#player").volume(vol); 
                        t = setTimeout("fadeOut()", 200); 
                        vol = vol - 10; 
                } else { 
                        clearTimeout(t); 
                        $("#player").stop(); 
                        vol = 20; 
                } 
        } 

        $("#player").onProgressChange(function (l,pr,pa,pt,t) { 
          if(pa > 90 && pa < 92) { 
                  stopSample(0, true); 
          } 
        });