function shadeToggle( whichLayer )
{
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( whichLayer );
  else if( document.all ) // this is the way old msie versions work
      elem = document.all[whichLayer];
  else if( document.layers ) // this is the way nn4 works
    elem = document.layers[whichLayer];
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}

function windowToggle( whichWindow )
{
  var elem2, vis2;
  if( document.getElementById ) // this is the way the standards work
    elem2 = document.getElementById( whichWindow );
  else if( document.all ) // this is the way old msie versions work
      elem2 = document.all[whichWindow];
  else if( document.layers ) // this is the way nn4 works
    elem2 = document.layers[whichWindow];
  vis2 = elem2.style;
  // if the style.display value is blank we try to figure it out here
  if(vis2.display==''&&elem2.offsetWidth!=undefined&&elem2.offsetHeight!=undefined)
    vis2.display = (elem2.offsetWidth!=0&&elem2.offsetHeight!=0)?'block':'none';
  vis2.display = (vis2.display==''||vis2.display=='block')?'none':'block';
}

function closeSignIn( shadeCloser )
{
	if( document.getElementById ) // this is the way the standards work
    elem2a = document.getElementById( shadeCloser );
  else if( document.all ) // this is the way old msie versions work
      elem2a = document.all[shadeCloser];
  else if( document.layers ) // this is the way nn4 works
    elem2a = document.layers[shadeCloser];
  vis2a = elem2a.style;
  
  if(vis2a.display=='block')
  	vis2a.display ='none';
}

function iframeWindow( iframeCloser )
{
	if( document.getElementById ) // this is the way the standards work
    elem1a = document.getElementById( iframeCloser );
  else if( document.all ) // this is the way old msie versions work
      elem1a = document.all[iframeCloser];
  else if( document.layers ) // this is the way nn4 works
    elem1a = document.layers[iframeCloser];
  vis1a = elem1a.style;
  
  if(vis1a.display=='block')
  	vis1a.display ='none';
}