What is the direction is the magnetic force vectors pointing from a coil of wire that has current running through it?

<http://www.ndt-ed.org/EducationResources/CommunityCollege/MagParticle/Graphics/coil1.gif>

The above link is a picture of a wire with current running through it. I see the blue arrows indicating the magnetic field lines, but I am having trouble visualizing the magnetic force lines. Where are they pointing? Please help.