102 void 

   103 shiftview(const char *arg) {

   104 	int i, j;

   105 

   106 	for(i = 0; !seltag[i]; i++);

   107 	for(j = i + 1; j < ntags && !seltag[j]; j++);

   108 	if(j < ntags)

   109 		return; /* more than one tag selected */

   110 	seltag[i] = False;

   111 	i += arg ? atoi(arg) : 0;

   112 	if(i < 0)

   113 		i = ntags - 1;

   114 	else if(i >= ntags)

   115 		i = 0;

   116 	seltag[i] = True;

   117 	lt->arrange();

   118 }

   119