var ml = ml || {};
ml.FlexCaptcha = {};

ml.FlexCaptcha.Ajax = {
	"MainDelimter": "~!"
	, "AttributeDelimter": "~|"
	, "RowDelimeter": "~:"
	, "ColumnDelimter": "~^"
	, https: []
	, Pair: function (pName, pHttpRequest) {
		this.name = pName;
		this.httpRequest = pHttpRequest;
	}
	, getNewHttp: function () {
		//this function is a close copy from jibbering: http://jibbering.com/2002/4/httprequest.html
		//(however with the advent of XMLHttpRequest in IE7, the test object order is not good, but I need to keep it until I find a way to test IE7 myself)
		try {
			return new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				return new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
				//return null;
			}
		}

		if (typeof XMLHttpRequest != 'undefined') {
			try {
				return new XMLHttpRequest(); //Mozilla & Safari
			}
			catch (e) {
				//return null;
			}
		}

		if (window.createRequest) {
			try {
				return window.createRequest(); //IceBrowser
			}
			catch (e) {
				//return null;
			}
		}

		return null;
	}
	, addHttp: function (pName, pHttpRequest) {
		this.removeHttp(pName);
		var pair = new this.Pair(pName, pHttpRequest);
		this.https.push(pair);
	}
	, getHttp: function (pName) {
		for (var p = 0; p < this.https.length; p++) {
			if (this.https[p].name == pName) {
				return this.https[p].httpRequest;
			}
		}
	}
	, removeHttp: function (pName) {
		for (var p = 0; p < this.https.length; p++) {
			if (this.https[p].name == pName) {
				this.https.splice(p, 1);
				break;
			}
		}
	}
}

ml.FlexCaptcha.runtimes = {}
ml.FlexCaptcha.getRuntime = function (pFlexCaptchaID) {
	if (ml.FlexCaptcha.runtimes[pFlexCaptchaID] == null) {
		var runtime = {
			  "ID": pFlexCaptchaID
			, "CaptchaImageName": ""
			, "CaptchaCode" : ""
		}

		ml.FlexCaptcha.runtimes[pFlexCaptchaID] = runtime;
	}

	return ml.FlexCaptcha.runtimes[pFlexCaptchaID];
}

ml.FlexCaptcha.initialize = function (pFlexCaptchaID, pConfig) {
	var runtime = ml.FlexCaptcha.getRuntime(pFlexCaptchaID);

	if (pConfig != null) {
		if (typeof (pConfig["CaptchaImageName"]) != undefined) { runtime["CaptchaImageName"] = pConfig["CaptchaImageName"]; }
		if (typeof (pConfig["CaptchaCode"]) != undefined) { runtime["CaptchaCode"] = pConfig["CaptchaCode"]; }
	}

	var ml_flexcaptcha_ids = document.getElementById("ml_flexcaptcha_ids"); //FlexCaptcha control array to submit back to validate functions to compare with ClientBaseID to get the correct index of ml_flexcaptcha_codes to pull out the captcha code
	if (ml_flexcaptcha_ids) {
		if (ml_flexcaptcha_ids.value != "") {
			ml_flexcaptcha_ids.value += ",";
		}

		ml_flexcaptcha_ids.value += pFlexCaptchaID;
	}

	var ml_flexcaptcha_codes = document.getElementById("ml_flexcaptcha_codes");
	if (ml_flexcaptcha_codes) {
		if (ml_flexcaptcha_codes.value != "") {
			ml_flexcaptcha_codes.value += ",";
		}

		ml_flexcaptcha_codes.value += runtime["CaptchaCode"];
	}
}

ml.FlexCaptcha.reloadCaptcha = function (pFlexCaptchaID) {
	var absolutePath = location.href.split("?")[0].split("#")[0];
	var url = absolutePath + "?ml-fc-reloadCaptcha=" + encodeURIComponent(pFlexCaptchaID); //
	var cacheControl = "&cc=" + Math.random(); //solves the problem in IE6.0 that GET requests are cached (on exact url)
	url += cacheControl;

	var http = ml.FlexCaptcha.Ajax.getNewHttp();
	ml.FlexCaptcha.Ajax.addHttp("reloadCaptcha" + cacheControl, http);
	http.open("GET", url, true);
	http.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
	http.onreadystatechange = function () { ml.FlexCaptcha.reloadCaptcha_handler(pFlexCaptchaID, cacheControl); };
	http.send(null);
}

ml.FlexCaptcha.reloadCaptcha_handler = function (pFlexCaptchaID, pCacheControl) {
	var http = ml.FlexCaptcha.Ajax.getHttp("reloadCaptcha" + pCacheControl);
	if (http.readyState == 4) {
		if (http.status == 200) {
			var responseText = http.responseText;

			if (responseText.indexOf("ERROR") == 0) {
				alert(responseText);
			}
			else {
				ml.FlexCaptcha.reloadCaptcha_update(pFlexCaptchaID, responseText);
			}
		}
		else {
			alert("Problem: status code: " + http.status + " " + http.statusText);
		}
		ml.FlexCaptcha.Ajax.removeHttp("reloadCaptcha" + pCacheControl);
	}
}

ml.FlexCaptcha.reloadCaptcha_update = function (pFlexCaptchaID, pResponseText) {
	var runtime = ml.FlexCaptcha.getRuntime(pFlexCaptchaID);

	var ml_flexcaptcha_codes = document.getElementById("ml_flexcaptcha_codes");
	var ml_flexcaptcha_image = document.getElementById(pFlexCaptchaID + "captchaimage");
	if (ml_flexcaptcha_codes == null || ml_flexcaptcha_image == null) {
		alert("Captcha could not be reloaded");
		return;
	}

	var newCaptchaCode = pResponseText.split("#_#")[0];
	var newCaptchaImageUrl = pResponseText.split("#_#")[1];

	var allCaptchaCodes = ml_flexcaptcha_codes.value.split(",");
	for (c = 0; c < allCaptchaCodes.length; c++) {
		if (allCaptchaCodes[c] == runtime["CaptchaCode"]) {
			allCaptchaCodes[c] = newCaptchaCode;
			break;
		}
	}

	ml_flexcaptcha_codes.value = "";
	for (var c = 0; c < allCaptchaCodes.length; c++) {
		if (ml_flexcaptcha_codes.value != "") { ml_flexcaptcha_codes.value += ","; }
		ml_flexcaptcha_codes.value += allCaptchaCodes[c];
	}

	//	ml_flexcaptcha_codes.value = newCaptchaCode;
	ml_flexcaptcha_image.src = newCaptchaImageUrl;
}