The ornamental design for a crosstable, as shown and described.
FIG. 1 is a top, front, right side perspective view of a cross table, showing my new design;
FIG. 2 is a top, rear, left side perspective view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is front elevation view thereof;
FIG. 5 a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines shown in the drawings are for the purpose of illustrating portions of the supporting structure of the cross table that form no part of the claimed design.