function showsub(subname){
var item=document.getElementById(subname);
if(item.style.display=='list-item'){
item.style.display='none';
setcookie(subname,'collapsed');
}else{
item.style.display='list-item';
setcookie(subname,'expanded');
}
}

function setcookie(){
var args=setcookie.arguments;
var nc=args[0]+'='+args[1];
document.cookie=nc;
}



function getCookie(name) {
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1) {
begin = dc.indexOf(prefix);
if (begin != 0) return null;
} else {
begin += 2;
}
var end = document.cookie.indexOf(";", begin);
if (end == -1) {
end = dc.length;
}
return unescape(dc.substring(begin + prefix.length, end));
}


function over(name){
document.getElementById(name).src='images/'+name+'.png';
}

function out(name){
document.getElementById(name).src='images/'+name+'1.png';
}

function showdrop(name){
document.getElementById(name).style.display='list-item';
}

function hidedrop(name){
document.getElementById(name).style.display='none';
}