function showdiv(name){
if (document.all){
  eval('document.all.' + name + '.style.visibility = "visible" ');
} else if (document.layers) {
  eval('document.layers["' + name + '"].visibility = "visible" ');
} else if (document.getElementById) {
  eval('document.getElementById("' + name + '").style.visibility = "visible" ');
}}

function hidediv(name){
if (document.all){
  eval('document.all.' + name + '.style.visibility = "hidden" ');
} else if (document.layers) {
  eval('document.layers["' + name + '"].visibility = "hidden" ');
} else if (document.getElementById) {
  eval('document.getElementById("' + name + '").style.visibility = "hidden" ');
}}