// JavaScript Document
function toggleLayers(what) {
var theDivs = document.getElementsByTagName('div');
for(var i = 0; i < theDivs.length; i++)
{
if(theDivs[i].id.search('apDiv') == 0)
{
theDivs[i].style.display = 'none';
}
}
document.getElementById('apDiv'+what).style.display = 'block';
}