Incorrect coordinate calculation at EPSG 3785 page

[rschroev]

The values for "Output coordinates" above the map don't correspond to the values calculated by proj from the same input coordinates (and with the parameters as given on the page).

The x values match, but the y values don't.

I tried with different coordinates; an example comparison for one of the cases:

Web page:

Input Coordinates: 6.6796875, 46.93359375

Output Coordinates: 743579.411158, 5899992.479599

(screenshot at ​http://roelschroeven.net/spatialreference-3785.png if you want)

proj:

$ proj +proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs

6.6796875 46.93359375

743579.41 5931241.61