//Back button that works in NS, IE, and Opera.

function Back()
 {

   if (navigator.appName == "Microsoft Internet Explorer")
     document.location="javascript: history.go(-1)"
   else
     document.location="javascript: window.back()"
 }

function Forward()
 {

  if (navigator.appName == "Microsoft Internet Explorer")
   document.location="javascript: history.go(1)"
  else
   document.location="javascript: window.forward()"
 }


document.write('<form><table align=center border=0 width=25%><tr><td align=center>')
document.write('<input type=button value=" Back " onClick="Back()"></td>')
document.write('<td align=center><input type=button value="Forward" onClick="Forward()">')
document.write('</td></tr></table></form>')