/**
 * @author:aliued-wd zhujunbiaojb
 */
Namespace = new Object();
Namespace.register = function(namespace){
	var nsArray = namespace.split('.');
	var sEval = "";
    var sNS = "";
	for (var i = 0; i < nsArray.length; i++){
        if (i != 0) sNS += ".";
        sNS += nsArray[i];
        sEval += "if (typeof(" + sNS + ") == 'undefined') " + sNS + " = new Object();"
    }
    if (sEval != "") eval(sEval);
}
$ = function(el){
	return document.getElementById(el);
}