Somebody want to halp me to convert this Indicator in Java Script

[dimborg]

Name: VOL OSC UP/DN.
Inputs: Vol(Volume),Fast(UpTicks), Slow(DownTicks);
Variable: VolumeOsc(0);

VolumeOsc = Average(Vol,Fast) - Average(Vol,Slow);
Plot1 (VolumeOsc,"VolOsc");
Plot2(0);

{Alert Criteria}
If Plot1 Crosses over 0 Then
Alert("Volume Oscillator crossed over zero")
Else
If Plot1 Crosses Under 0 Then
Alert ("Volume Oscillator crossed under zero");
End;

Please I am new and confiuse.

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