function toggleLayer(whichLayer)
{if (document.getElementById)
{// this is the way the standards work
var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"none";}
else if (document.all)
{// this is the way old msie versions work
var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"none";}
else if (document.layers)
{// this is the way nn4 works
var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"none";}}
function toggleLayer2(whichLayer)
{if (document.getElementById)
{// this is the way the standards work
var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"block";}
else if (document.all)
{// this is the way old msie versions work
var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"block";}
else if (document.layers)
{// this is the way nn4 works
var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"block";}}
function toggleLayer3(whichLayer)
{if (document.getElementById)
{var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"block";}
else if (document.all)
{var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"block";}
else if (document.layers)
{var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"block";}}