function IEPngFix( pngimg, gifimg, width, height )
{
	var code = '<IMG SRC="'+ gifimg +'" WIDTH="' + width + '" HEIGHT="' + height + '" BORDER=0 STYLE="BACKGROUND:url('+pngimg+') no-repeat 0px 0px;">';
	if( navigator.userAgent.indexOf("Opera") > 1 )
		document.write(code);
	else
		if( navigator.userAgent.indexOf("MSIE 6") > 1 )
			document.write('<IMG SRC="'+gifimg+'" WIDTH="' + width + '" HEIGHT="' + height + '" BORDER="0" ALT="" STYLE="filter: progid:DXImageTransform.Microsoft.AlphaImageLoader (src=' + pngimg + ' , sizingMethod=scale );">');
		else
			if(navigator.userAgent.indexOf("MSIE 5") != -1)
				document.write(code);
			else
				document.write(code);
				
}
function popup( id )
{
  var obj = document.getElementById( id );
  var popup = document.getElementById( 'popup' );
  if ( popup.style.visibility == 'visible' )
  {
    popup.style.visibility = 'hidden';
  }
  else
  {    
    popup.style.visibility = 'visible';
  }
}