allOpened = false;

function chClass(obj){
if(!obj.id || obj.id.indexOf("li")!=0)return false;
if(obj.id=="allopenbutton"){allOpen();return false}
obj2 = "u" + obj.id;
if(document.all){
if(!document.all(obj2))return false;
obj2 = document.all(obj2);
obj2.className = obj2.className=="open" ? "close" : "open";
obj.className = obj2.className;
}
else if(document.getElementById){
if(!document.getElementById(obj2))return false;
obj2 = document.getElementById(obj2);
obj2.className = obj2.className=="open" ? "close" : "open";
obj.className = obj2.className;
}
}