var lib = new lib();
function lib(){
		
	//addEvent
	//イベントの追加を行う
	this.addEvent = function(arg_obj,arg_event,arg_func,arg_capture){
		if(arg_obj.addEventListener){
			arg_obj.addEventListener(arg_event,arg_func,arg_capture);
		}else if(arg_obj.attachEvent){
			arg_obj.attachEvent("on" + arg_event,arg_func);
		}
	}
	
	//getI
	//getElementByIdの拡張
	this.getI = function(){
		if(arguments.length != 1){
		var rtn_array = new Array();
		for(var ii=0; ii<arguments.length; ii++){
			rtn_array.push(document.getElementById(arguments[ii]));
			}
			return rtn_array;
		}else{
			return document.getElementById(arguments[0]);
		}
	}

	//replaceC
	//クラスの書き換えを行う
	this.replaceC = function(arg_obj,arg_before,arg_after){
		var class_array = arg_obj.className.split(/\s/m);		
		var rtn_class = "";
		for(var ii=0; ii<class_array.length; ii++){
			if(class_array[ii] == arg_before){
				rtn_class += arg_after;
			}else{
				rtn_class += class_array[ii];
			}
			if(ii != (class_array.length - 1)){
				rtn_class += " ";
			}
		}
		arg_obj.className = rtn_class;
	}
}