var timer;
var searchTimeOut = 1000;
function busque(str, tab){
    if(str.length != 0){
        timer = setTimeout("busqueAgora('"+str+"', "+tab+")",searchTimeOut);
    }
}                
function busqueAgora(str, tab){xfc_busca(str, tab);}
function clearTime() {
    clearTimeout(timer);
}