var xmlFile;
var validateObj = new Array();

function refreshForm(varName, varValu) {
    var newURL = window.location.pathname + "?" + varName + "=" + varValu;
	document.forms[0].action = newURL;
	document.forms[0].submit()
}

function importXML(file, func) {
	if(document.implementation && document.implementation.createDocument) {
		xmlFile = document.implementation.createDocument("", "", null);
		xmlFile.onload = func;
	} else if(window.ActiveXObject) {
		xmlFile = new ActiveXObject("Microsoft.XMLDOM");
		xmlFile.onreadystatechange = function () {
			if(xmlFile.readyState == 4) {func();};
		};
	}
	xmlFile.load(file);
}

function parseFormXml() {
	form = document.getElementById(xmlFile.documentElement.getAttribute("id"));
	addEvent(form, "submit", onsubmitCheck, false);
	inputs = xmlFile.getElementsByTagName("inputbox");
	for(var i = 0; i < inputs.length; i++) {
		val = new inputValidate(inputs[i]);
		validateObj[val.id] = val;
		addEvent(val.inputf, "blur", onblurCheck, false);
	};
}

function getXmlUrl() {
	var url = window.location.href;
	url = url.split("?")[0];
	url = url.match(/\w+\.[a-zA-Z0-9]+$/).toString();
	var dot = url.lastIndexOf(".");
	url = url.substring(0, dot);
	url = url + ".xml";
	return url;
}

function inputValidate(node) {
	this.id = node.getAttribute("id");
	this.inputf = document.getElementById(this.id);
	this.valid = true;
	this.sreq = (node.getAttribute("req") == "true");
	this.regs = new Array();
	curNode = node.getElementsByTagName("regex");
	for(i = 0; i < curNode.length; i++ ) {
		if(curNode[i] != null) {this.regs[i] = new RegExp(curNode[i].childNodes[0].nodeValue);};
	};
	err = node.getElementsByTagName("errmsg")[0];
	if(err != null) {
		this.error = err.childNodes[0].nodeValue;
	} else {
		this.error = null;
	};
	this.parentClass = this.inputf.parentNode.className;
	
	this.markInvalid = function(errMsg) {
  		this.inputf.parentNode.className = this.parentClass + " errorarea";
  		if(this.valid == false) {
  			errorNode = document.getElementById(this.id + "errmsg");
  			textNode = document.createTextNode(errMsg);
  			errorNode.replaceChild(textNode, errorNode.childNodes[0]);
  		} else {
			errp = document.createElement("p");
			errp.className = "error txtr";
			errp.setAttribute("id", this.id + "errmsg");
			textNode = document.createTextNode(errMsg);
			errp.appendChild(textNode);
			this.inputf.parentNode.appendChild(errp);
  		};
  		this.valid = false;
	};
	
	this.markValid = function() {
  		if(this.valid == false) {
  			errorNode = document.getElementById(this.id + "errmsg");
  			this.inputf.parentNode.removeChild(errorNode);
  		};
  		this.valid = true;
  		this.inputf.parentNode.className = this.parentClass;
	};
	
	this.check = function() {
		var fldValue = this.inputf.value;
		var getError = "";
		if(fldValue == "") {
			getError = "You must fill out this field.";
			if(this.sreq == false) {
				this.markValid();
				return;
			};
		} else {
			if(this.regs.length > 0) {
				var formatOK = false;
				for(var i = 0; i < this.regs.length; i++) {
					if(this.regs[i].test(fldValue)) {
						formatOK = true;
						break;
					};
				};
				if(formatOK == false) {getError = this.error;};
			};
		};
		if(getError == "") {
			this.markValid();
		} else {
			this.markInvalid(getError);
		};
	};
}


function addEvent(obj, etyp, elis, ucap) {
	if(obj.addEventListener) {
		obj.addEventListener(etyp, elis, ucap);
		return true;
	} else if(obj.attachEvent) {
		var objAttach = obj.attachEvent("on"+etyp, elis);
		return objAttach;
	} else {
		return false;
	};
}

function onblurCheck(event) {
	if(document.all) {
		id = event.srcElement.getAttribute("id");
	} else {
		id = this.getAttribute("id");
	};
	validateObj[id].check();
}

function onsubmitCheck(event) {
	var formOk = true;
	for(var i in validateObj) {
		validateObj[i].check();
		if(validateObj[i].valid == false) {formOk = false;};
	};
	if(formOk == false) {
		message = "Please review the fields in red and provide the correct information.";
		alert(message);
		if(document.all) {
			event.returnValue = false;
		} else {
			event.preventDefault();
		};
	};
}