function MM_swapImage() 
{ //v3.0
  var i, j = 0, x, a = MM_swapImage.arguments; 
  document.MM_sr = new Array; 
  for(i = 0; i < (a.length - 2); i += 3)
   if ((x = MM_findObj(a[i])) != null) 
   {
     document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];
   }
}

function swapImage(id,new_src) {
  document.getElementById(id).src = new_src;
}