var links;
var oldsrc = new Array();
var newsrc = new Array();
function init()
{
  links = getElement("navigation").getElementsByTagName("a");
  for(i = 0; i < links.length; i++){
    oldsrc[i] = links.item(i).firstChild.src;
    newsrc[i] = oldsrc[i].replace(/.gif/,"b.gif");
  }
  addEvent(links.item(0),"mouseover",img0n,false);
  addEvent(links.item(0),"mouseout",img0o,false);
  addEvent(links.item(1),"mouseover",img1n,false);
  addEvent(links.item(1),"mouseout",img1o,false);
  addEvent(links.item(2),"mouseover",img2n,false);
  addEvent(links.item(2),"mouseout",img2o,false);
  addEvent(links.item(3),"mouseover",img3n,false);
  addEvent(links.item(3),"mouseout",img3o,false);
  addEvent(links.item(4),"mouseover",img4n,false);
  addEvent(links.item(4),"mouseout",img4o,false);
  addEvent(links.item(5),"mouseover",img5n,false);
  addEvent(links.item(5),"mouseout",img5o,false);
}

function img0n()
{
  links.item(0).firstChild.src = newsrc[0];
}

function img0o()
{
  links.item(0).firstChild.src = oldsrc[0];
}

function img1n()
{
  links.item(1).firstChild.src = newsrc[1];
}

function img1o()
{
  links.item(1).firstChild.src = oldsrc[1];
}

function img2n()
{
  links.item(2).firstChild.src = newsrc[2];
}

function img2o()
{
  links.item(2).firstChild.src = oldsrc[2];
}

function img3n()
{
  links.item(3).firstChild.src = newsrc[3];
}

function img3o()
{
  links.item(3).firstChild.src = oldsrc[3];
}

function img4n()
{
  links.item(4).firstChild.src = newsrc[4];
}

function img4o()
{
  links.item(4).firstChild.src = oldsrc[4];
}

function img5n()
{
  links.item(5).firstChild.src = newsrc[5];
}

function img5o()
{
  links.item(5).firstChild.src = oldsrc[5];
}

onload = init;