function startList(nm) {
var zzz = document.getElementById('lnk'+nm).className;
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
if (navRoot.childNodes[i].id != zzz) { navRoot.childNodes[i].className = '';}
}
if(zzz == 'over'){ document.getElementById('lnk'+nm).className = ''; }
if(zzz == ''){document.getElementById('lnk'+nm).className = 'over'; } 
}