var jsDOM0 = (document.all);
var jsDOM1 = (document.getElementById);
var jsDOM = jsDOM0 || jsDOM1;
function getObj(name){
	if (typeof name == "object") return name;
	if (jsDOM1) return document.getElementById(name);
	if (jsDOM0) return eval('document.all.'+name);
	else return null;
}
function switchClass(id, from, to) {
	if(getObj(id).className==from) {
		getObj(id).className=to;
	}
	else {
		getObj(id).className=from;
	}
}