/*
author:vapour
email:dovapour@gmail.com
website:http://www.dovapour.com.cn/
qq:362380046
*/

function $d(element){
	if(arguments.length>1){
		for(var i=0,elements=[],length=arguments.length;i<length;i++)
			elements.push($d(arguments[i]));
		return elements;
	}
	if(typeof element=="string")
		return document.getElementById(element);
	else
		return element;
}

var Class={
	create:function(){
		return function(){
			this.initialize.apply(this,arguments);
		}	
	}
}

function addClassName(obj,className){
	obj.className+=" "+className;
}
function removeClassName(obj,className){
	var reg=new RegExp(" "+className,"g");
	obj.className=obj.className.replace(reg,"");
}