// ############################## START FUNC ############################################
function mass_point(atom_sorts, x,y,z)
{

     var number_of_atoms=atom_sorts.length;
     var asum=0;
     var mx=0;
     var my=0;
     var mz=0;
     var r_string="";

       for(n=0;n<number_of_atoms;n++){
       mx=mx+x[n]*atom_sorts[n];
       my=my+y[n]*atom_sorts[n];
       mz=mz+z[n]*atom_sorts[n];
       asum=asum-(-atom_sorts[n]);  // To avoid string addition
       }

mx=parseInt(mx/asum*100)/100;
my=parseInt(my/asum*100)/100;
mz=parseInt(mz/asum*100)/100;

if(mx==0) mx=0.01;
if(my==0) my=0.01;
if(mz==0) mz=0.01;

r_string = "mass_point  "+mx+" "+my+" "+mz+"#"+"&&"+asum;

// With && as split because JavaScript doesn't recognize setting of two variables
// with one function this time.

return r_string;

}
// ############################### end func ############################################