var guid = "";
var isRequest = false;
var objResponse = null;
var complete = null;
var error = null;
var gOptions = null;

// rendering response url
renderShorteners = function(response, options) {

	if (response.error) {
		error(decodeURIComponent(response.message).replace(/\+/gi, " "));
		return;
	}
	
	complete(options.Sender, response.url);

	// ¿äû flag¸¦ ¼³Á¤ÇÑ´Ù.
	isRequest = true;
	objResponse = response;

	var script = document.getElementById("shorten_call" + String(guid));
	var browser = navigator.appName;
	var browserVersion = parseFloat(navigator.appVersion);


	// IE 6.0¿¡¼­ Url´ÜÃà ¹öÆ°À» Ŭ¸¯ÈÄ ´Ù¸¥ ÆäÀÌÁö·Î À̵¿Çß´Ù°¡ µÚ·Î°¡±â·Î SRP ÆäÀÌÁö¿¡ ¿Í¼­ 
	// Url´ÜÃà ¹öÆ°À» ´Ù½Ã Ŭ¸¯Çϸé IE°¡ Á×´Â Çö»óÀÌ ¹ß»ýÇÔ. IE6.0¸¸ ¹®Á¦¸¦ ÀÏÀ¸Å´.
	if (!(browser == "Microsoft Internet Explorer" && browserVersion == 4))
	{
		if (script != null) {
			script.parentNode.removeChild(script);
		}
	}

	script = null;
};

// request shorten url
getShorteners = function(sender, options, callback_complete, callback_error) {

	// need to make these global since we can't pass in to the twitter callback
	options["Sender"] = sender;

	complete = callback_complete;
	error = callback_error;

	// ÇѹøÀÌ¶óµµ ¿äûÇÑ °æ¿ì¿¡´Â ´Ù½Ã Àç¿äûÀ» ÇÏÁö ¾Ê´Â´Ù.
	if (isRequest) {
		if (objResponse != null) {
			renderShorteners(objResponse, options);
		}

		return;
	}

	if (typeof options == "object") {
		Type = options.Type;
		Source = options.Source;
	}
	
	// if the element isn't on the DOM, don't bother
	if (options.Sender == null || (typeof complete != "function" || typeof error != "function")) {
		return;
	}

	// shortener page url
	var url = "http://ibuy.kr/RequestShortener.aspx?source=" + encodeURIComponent(options.Source) + "&callback=shortenerCallback";


	gOptions = options;

	guid = (new Date()).getTime();

	var script = document.createElement("script");
	script.setAttribute("id", "shorten_call" + String(guid));
	script.setAttribute("src", url);

	var body = document.getElementsByTagName("body")[0];
	if (body != null)
	{
		body.appendChild(script);
	}

	script = null;
};


// callback functioin
shortenerCallback = function(obj)
{
	renderShorteners(obj, gOptions);
}
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