var galery_offset=0;
var galery_offset_min;

function galery_left_over()
{
  document.getElementById("galery_image_left").src="data/arrow-left-red.gif";
  return false;
}


function galery_left_out()
{
  document.getElementById("galery_image_left").src="data/arrow-left.gif";
  return false;
}

function galery_left_click()
{
  if (galery_offset_min<800) return false;
  galery_offset=galery_offset+200;
  if (galery_offset>0) galery_offset=0;
  document.getElementById("galery").style.left=galery_offset;
  return false;
}


function galery_right_over()
{
  document.getElementById("galery_image_right").src="data/arrow-right-red.gif";
  return false;
}



function galery_right_out()
{
  document.getElementById("galery_image_right").src="data/arrow-right.gif";
  return false;
}

function galery_right_click()
{
  if (galery_offset_min<800) return false;
  galery_offset=galery_offset-200;
  if (galery_offset<800-galery_offset_min) galery_offset=800-galery_offset_min;
  document.getElementById("galery").style.left=galery_offset;
  return false;
}