var mhp_larr
var mhp_rarr
var mhp_uarr
var mhp_darr
var mhp_rrarr

function setarrows( l, r, u, d, db)
{
   mhp_larr=l
   mhp_rarr=r
   mhp_uarr=u
   mhp_darr=d
   mhp_rrarr=db
}

function ilink( s)
{
   document.write( "<a href=\"")
   document.write(s)
   document.write( "\"> <b>")
   document.write( mhp_rarr)
   document.write( "</b> </font></a>")
}

function olink( s)
{
   document.write( "<a href=\"")
   document.write(s)
   document.write( "\"> <b>")
   document.write( mhp_rrarr)
   document.write( "</b> </font></a>")
}

function olink1( s)
{
   document.write( "<a href=\"")
   document.write( s)
   document.write( "\"><font size=\"+2\"> <b>&gt;&gt;</b></font></a>")
}

function llink( s)
{
   document.write( "<a href=\"")
   document.write( s)
   document.write( "\"> ")
   document.write( mhp_larr)
   document.write( "</font></a>")
}

function ulink( s)
{
   document.write( "<a href=\"")
   document.write( s)
   document.write( "\"> ")
   mathcolor="Red"
   document.write( mhp_uarr)
   mathcolor="Black"
   document.write( "</font></a>")
}

function dlink( s)
{
   document.write( "<a href=\"")
   document.write( s)
   document.write( "\"> ")
   document.write( mhp_darr)
   document.write( "</font></a>")
}

function drawrule( color)
{
   document.write( "<hr align=\"left\" color=\"")
   document.write( color)
   document.write( "\" size=\"4\" noshade width=\"600\"> ")
}

function bktitle( title, prevt, nextt, offset)
{
   document.write( "<font size=\"+2\" color=\"red\">")
   document.write( "<b> * </b> </font>")

   if (prevt != "") ulink( prevt)
   else document.write( "&nbsp;&nbsp")

   if (nextt != "") dlink( nextt)
   else document.write( "&nbsp;&nbsp")

   document.write( "&nbsp; &nbsp; &nbsp; ")

   document.write( "<font size=\"+2\"> <b>")
   if (title != "") document.write( title)
   else document.write( "(untitled)")
   document.write( "</b> </font>")
   document.write( "\n");

   if (offset == -1) drawrule( "blue")
   else {

      document.write( "<table cellpadding=\"0\"> <tr>")
      document.write( "<td align=\"right\" valign=\"center\"> ")
      document.write( "<hr color=\"blue\" size=\"4\" noshade width=\"")
      document.write( offset)
      document.write( "\"> </td>")

      document.write( "<td align=\"center\">")
      document.write( "<hr width=\"4\" size=\"16\" color=\"blue\" noshade> </td>" )

      document.write( "<td> <hr align=\"left\" color=\"blue\" size=\"4\" noshade width=\"")
      document.write( 594-offset)
      document.write( "\"> </td>")

      document.write( "</tr> </table> \n")
   }
}

function crtitle( title)
{
   document.write( "<font size=\"+2\" color=\"red\">")
   document.write( "<b> * </b> </font>")

   document.write( "&nbsp; &nbsp; &nbsp; &nbsp;")
   document.write( "<font size=\"+2\"> <b>")
   document.write( title)
   document.write( "</b> </font>")
   document.write( "\n")
   drawrule( "red")
}

function bkchapter( title, fname)
{
   document.write( " <font size=\"+1\">")
   document.write( title)
   ilink( fname)
   document.write( "</font> ")
}

function bkendpage( toct, title, prevt, nextt)
{
   if (toct != "") llink( "toc.html")
   if (title != "")
   {
      document.write( " <font color=\"blue\"> ")
      document.write( "<i> ")
      document.write( title)
      document.write( " </i> </font> ")
      document.write( "&nbsp; &nbsp; &nbsp;")
   }
   if (prevt != "") ulink( prevt)
   if (nextt != "") dlink( nextt)
}

function offlines( n)
{
   for (i=0; i<n; i++) drawrule( "blue")
}