var state = 'none';
function showhide() {
if (state == 'block') {
     state = 'none';
} else {
     state = 'block';
}

if (document.all) { //IS IE 4 or 5 (or 6 beta)
eval( "document.all.addform.style.display= state");
}
if (document.layers) { //IS NETSCAPE 4 or below
document.layers["addform"].display = state;
}
if (document.getElementById && !document.all) {
maxwell_smart = document.getElementById("addform");
maxwell_smart.style.display = state;
}
}