function toggleVisibility(whichLayer)
{
if (document.getElementById)
{
var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"none";
}
else if (document.all)
{
var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"none";
}
else if (document.layers)
{
var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"none";
}
}

function popupwindow (url, width, height) {
window.open(url,'','width='+width+',height='+height);
}

function switchBox (box1,box2) {
	toggleVisibility(box1);
	toggleVisibility(box2);
	activeBox = box1;
}