//show or hide the div
var state = 'none';

function showhide(layer_ref) {

if (state == 'block') {
state = 'none';
}
else {
state = 'block';
}
if (document.all) { //IS IE 4 or 5 (or 6 beta)
eval( "document.all." + layer_ref + ".style.display = state");
}
if (document.layers) { //IS NETSCAPE 4 or below
document.layers[layer_ref].display = state;
}
if (document.getElementById &&!document.all) {
hza = document.getElementById(layer_ref);
hza.style.display = state;
}
}

//swap the image
intImage = 2;
function swapImage(image_id) {
switch (intImage) {
 case 1:
   document.getElementById(image_id).src = 'images/buttons/button_plus_small.gif'
   intImage = 2
   return(false);
case 2:
   document.getElementById(image_id).src = 'images/buttons/button_minus_small.gif'
   intImage = 1
   return(false);
 }
}


function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}