  In this paper we obtain a Harnack type inequality for solutions to elliptic
equations in divergence form with non-standard $p(x)-$type growth. A model
equation is the inhomogeneous $p(x)-$laplacian. Namely, \[
\Delta_{p(x)}u:=\mbox{div}\big(|\nabla u|^{p(x)-2}\nabla
u\big)=f(x)\quad\mbox{in}\quad\Omega \] for which we prove Harnack inequality
when $f\in L^{q_0}(\Omega)$ if $\max\{1,\frac N{p_{min}}\}<q_0\le \infty$. The
constant in Harnack inequality depends on $u$ only through
$\||u|^{p(x)}\|_{L^1(\Omega)}^{p_{max}-p_{min}}$. Dependence of the constant on
$u$ is known to be necessary in the case of variable $p(x)$. As in previous
papers, log-H\"older continuity on the exponent $p(x)$ is assumed.
  We also prove that weak solutions are locally bounded and H\"older continuous
when $f\in L^{q_0(x)}(\Omega)$ with $q_0\in C(\Omega)$ and $\max\{1,\frac
N{p(x)}\}<q_0(x)$ in $\Omega$.
  These results are then generalized to elliptic equations \[
\mbox{div}A(x,u,\nabla u)=B(x,u,\nabla u) \] with $p(x)-$type growth.
