var Images = Array();

function Img(name, path)
{
  Images[name]=new Image();
  Images[name].src=path;
}

function swapBg( obj, color )
{
  obj.style.backgroundColor = color;
}

function swapImg(obj, name)
{
  eval("elObj = document."+obj+";");
  elObj.src = Images[name].src;
}