function swap(what)
{
var theDivs = document.getElementsByTagName('div');
for(var i = 0; i < theDivs.length; i++)
{
if(theDivs[i].id.search('swap') == 0)
{
theDivs[i].style.display = 'none';
}
}
document.getElementById('swap'+what).style.display = 'block';
}
window.onload = function()
{
var theDivs2 = document.getElementsByTagName('div');
for(var j = 0; j < theDivs2.length; j++)
{
if(theDivs2[j].id.search('swap') != -1)
{
theDivs2[j].style.display = 'none';
}
}
}