getelbyclass:function (n,t,el) {
t = t || '*';
el = el || _$$.$();
var elms=[], relm=[];
elms=el.getElementsByTagName(t);
for(var i=0;i<elms.length;i++) {
if (elms[i].className==n) {
relm.push(elms[i]);
}
}
return relm;
},