function swapon1()
 {
      document.img1.src="/images/new/button_top_f2.gif";

 }
function swapoff1()
 {
      document.img1.src="/images/new/button_top_f1.gif";

 }
 function swapon2()
 {
      document.img2.src="images/navigr1r.gif";

 }
function swapoff2()
 {
      document.img2.src="images/navig1s.gif";

 }
document.write("<div align='center'><a href='#topbot' onmouseover='swapon1()'  onmouseout='swapoff1()' title='top of section'> <br/><img src='/images/new/button_top_f1.gif' name='img1' alt='top of section' title='top of section'/><br/>top of section</a></div>")