DropShadow[x_, ds_: {-6, 9}] := Graphics[{Inset[ImageAdjust[Blur[x, 4], {0, 0, 1.5}], Center, Offset[ds, ImageScaled[{.5, .5}]], Scaled[{1, 1}]], Inset[x, Center, Center, Scaled[{1, 1}]]}]
DropShadow[ Plot[Evaluate[Table[BesselJ[n, x], {n, 5}]], {x, 0, 10}, PlotStyle -> {Red, Green, Blue, Yellow, Orange}]]