//  JavaScript supporting framed site map, SiteMap2.html

// Function to turn a document reference number into that of the first in its block.
function fb(y)
{
var z=y;
var zu=z.indexOf("_");
if (zu>-1) z=z.substring(0,zu+1)+"1";
return z;
}
// Set initial value of anchor, which says which part of contents is displayed in LH frame.
hsh=self.location.hash;
hsh=hsh.substring(hsh.indexOf("#")+1,hsh.length);
// Function to synch anchor of contents (in LH frame) with document (in RH frame), and
// schedule another call to ensure that everything stays in synch.
timerID=null;
tried=0;
function synch()
{
rr=top.r;
if ((top.frames[1].location=="about:blank") && rr!=null && rr!="" && rr!="undefined" && tried==0)
	{
	top.frames[1].location=rr;
	tried++;
	timerID=setTimeout("synch();",2000);
	return;
	};
	
var z=fb(""+top.frames[1].docref);
if (z!=null && z!="" && z!="undefined" && z!=hsh)
 {
 var t=self.location;
 var p=t.href;
 var i=p.indexOf("#");
 if (i>-1) p=p.substring(0,i);
 t.href=p+"#"+z;
 hsh=z;
 };
timerID=setTimeout("synch();",2000);
}
// Function to cancel timeout for calls to synch().
function stop()
{
if (timerID!=null) clearTimeout(timerID);
}
// Function to set our anchor variable, hsh, when the RH frame is loaded via a link in this
// contents page, so we know the link is already visible and we don't need to navigate to it.
function d(z)
{
hsh=fb(z);
return true;
}