Hi Brian,

On the node javascript, add a ctx.save() before starting the ctx drawing and end with a ctx.restore();

Wayne

SwDPDT2.prototype.onDrawForeground = function(ctx)
{
        ctx.save(); // save the context so we don't mess up others

	this.onDrawVectorSwitch(ctx);
        
        ctx.restore(); // restore context to what it was on entry
};