function Toggle(button)
{
    ypos = document.body.scrollTop;

    src = button.firstChild.src.split('/');
    srcparts = src[src.length-1].split('_');
    if (srcparts[1]=='op.gif')
    {
        button.firstChild.src= srcparts[0] + '_neer.gif';
        button.parentNode.nextSibling.style.display='';
    }
    else if (srcparts[1]=='neer.gif')
    {
        button.firstChild.src= srcparts[0] + '_op.gif';
        button.parentNode.nextSibling.style.display='none';
    }
    
}


function DoRecursive(node,newDisplay,newImgSuffix)
{
  if (node.hasChildNodes())
  {                      
    if (node.style!=null && node.style.display!=newDisplay)
    {
        if (node.previousSibling && node.previousSibling.firstChild && node.previousSibling.firstChild.firstChild && node.previousSibling.firstChild.firstChild.src && node.previousSibling.firstChild.firstChild.src.indexOf('_pre') <0 )
        {
            node.style.display=newDisplay;

            src = node.previousSibling.firstChild.firstChild.src.split('/');
            srcparts = src[src.length-1].split('_');

            node.previousSibling.firstChild.firstChild.src=srcparts[0]+newImgSuffix;
        }
    }
    DoRecursive(node.firstChild,newDisplay,newImgSuffix);
  }
  if (node.nextSibling)
    DoRecursive(node.nextSibling,newDisplay,newImgSuffix);
}



function ToggleAll(button)
{
    src = button.firstChild.src.split('/');
    srcparts = src[src.length-1].split('_');
    
    if (srcparts[1]=='op.gif')
    {
        DoRecursive(button.parentNode.nextSibling,'','_neer.gif');        
    }
    else if (srcparts[1]=='neer.gif')
    {
        DoRecursive(button.parentNode.nextSibling,'none','_op.gif');        
    }
    
    event.cancelBubble=true;
    return false;
}