function bookopen(myLink,windowName)
{
	strLink = new String(myLink);
	para = new Number(strLink.lastIndexOf('?')+1);
	if (top==self)
	{
		adpage = new String(location.href);
	}
	else
	{
		adpage = new String();
		adpage = document.referrer;	
		
	}
	
	if (para>0)
	{
		myLink.href += "&wa="+adpage;
	}
	else
	{
		myLink.href += "?wa="+adpage;
	}
	if(! window.focus) return;
	var myWin=window.open('',windowName,"height=400,width=450,status=yes,dependent=yes,scrollbars=yes,resizable=yes");
	myWin.focus();
	myLink.target=windowName;
}