function restore()
{
 var i,x,a=document.swaps;
 if(a)
 {
  for(i=0;i<a.length;i++)
  {
   if(a[i].oldSrc)a[i].src=a[i].oldSrc;
  }
 }
}

function swap()
{
 var i,j=0,a=swap.arguments;
 document.swaps=new Array;
 for(i=0;i<(a.length-1);i+=2)
 {
  document.swaps[j++]=a[i];
  if(!a[i].oldSrc)a[i].oldSrc=a[i].src;a[i].src=a[i+1];
 }
}