i = 2;
function change_bg_pic()
  {
    if(i == allpics){i = 1;}
    setpic = tp[i];

    setTimeout("changepic(setpic)",10000);
  }

function changepic(action)
  {
  i = i+1;
  document.getElementById('bg_pic_top').style.backgroundImage = 'url(webpics/'+ action + ')';
  change_bg_pic();
  }

function showmenue(id,transparency)
  {
  var element = document.getElementById(id);
  element.style.display = 'block';
  }

function hidemenue(id)
  {
  var element = document.getElementById(id);
  element.style.display = 'none';

  }