var foutmelding="Er is niet aan alle verplichte onderdelen van het formulier voldaan"

function leeg_check(Str){

	if (Str=="" || Str==null)

		return true

	else

		return false

	}

function checkemail(str){

	var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/

	var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/

	if (!reg1.test(str)&&reg2.test(str))

		return false

	else

		return true

	}

function alertForm(locElName,locFormName,locType){

	blAlerted=0

	blinkTime=300

	tmpForm=document.getElementById(locFormName)

	alertEl=""

	for (var i=0; i<tmpForm.length; i++){

		if (tmpForm[i].name!=locElName)

			tmpForm[i].style.backgroundColor=''

		else

			alertEl=tmpForm[i].name

		}

	for (var i=0; i<tmpForm.length; i++){

		if (tmpForm[i].name==locElName){

			switch (locType){

				case 'email':

					if (leeg_check(tmpForm[i].value))

						alert(foutmelding)

					else

						alert("\""+tmpForm[i].value+"\" is geen e-mail adres")

					break

				case 'isNaN':

					if (leeg_check(tmpForm[i].value))

						alert(foutmelding)

					else

						alert("\""+tmpForm[i].value+"\" is geen getal")

					break

				case '':

					if (blAlerted!=1)

						alert(foutmelding)

					blAlerted=1

					break

				default:

					alert(locType)

					break

				}

			if (tmpForm[i].name==alertEl)

				flashOff=alertColor

			else

				flashOff=''

			tmpForm[i].style.backgroundColor=alertFlashColor

			setTimeout('tmpForm['+i+'].style.backgroundColor="'+flashOff+'"',blinkTime)

			setTimeout('tmpForm['+i+'].style.backgroundColor="'+alertFlashColor+'"',blinkTime*2)

			setTimeout('tmpForm['+i+'].style.backgroundColor= "'+alertColor+'"',blinkTime*3)

			function fncFocus() {tmpForm[i].focus();tmpForm[i].select();return}

			switch(tmpForm[i].type) {

				case "checkbox":

					tmpForm[i].focus();return

				case "file":

					fncFocus()

				case "password":

					fncFocus()

				case "select-multiple":

					tmpForm[i].focus()

				case "select-one":

					tmpForm[i].focus();return

				case "radio":

					tmpForm[i].focus()

				case "text":

					fncFocus()

				case "textarea":

					fncFocus()

				}

			}

		}

	}







/* Simple AJAX Code-Kit (SACK) */

/* ©2005 Gregory Wild-Smith */

/* www.twilightuniverse.com */

/* Software licenced under a modified X11 licence, see documentation or authors website for more details */



function sack(file){

	this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";

	this.requestFile = file;

	this.method = "POST";

	this.URLString = "";

	this.encodeURIString = true;

	this.execute = false;



	this.onLoading = function() { };

	this.onLoaded = function() { };

	this.onInteractive = function() { };

	this.onCompletion = function() { };



	this.createAJAX = function() {

		try {

			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

		} catch (e) {

			try {

				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

			} catch (err) {

				this.xmlhttp = null;

			}

		}

		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")

			this.xmlhttp = new XMLHttpRequest();

		if (!this.xmlhttp){

			this.failed = true; 

		}

	};

	

	this.setVar = function(name, value){

		if (this.URLString.length < 3){

			this.URLString = name + "=" + value;

		} else {

			this.URLString += "&" + name + "=" + value;

		}

	}

	

	this.encVar = function(name, value){

		var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);

	return varString;

	}

	

	this.encodeURLString = function(string){

		varArray = string.split('&');

		for (i = 0; i < varArray.length; i++){

			urlVars = varArray[i].split('=');

			if (urlVars[0].indexOf('amp;') != -1){

				urlVars[0] = urlVars[0].substring(4);

			}

			varArray[i] = this.encVar(urlVars[0],urlVars[1]);

		}

	return varArray.join('&');

	}

	

	this.runResponse = function(){

		eval(this.response);

	}

	

	this.runAJAX = function(urlstring){

		this.responseStatus = new Array(2);

		if(this.failed && this.AjaxFailedAlert){ 

			alert(this.AjaxFailedAlert); 

		} else {

			if (urlstring){ 

				if (this.URLString.length){

					this.URLString = this.URLString + "&" + urlstring; 

				} else {

					this.URLString = urlstring; 

				}

			}

			if (this.encodeURIString){

				var timeval = new Date().getTime(); 

				this.URLString = this.encodeURLString(this.URLString);

				this.setVar("rndval", timeval);

			}

			if (this.element) { this.elementObj = document.getElementById(this.element); }

			if (this.xmlhttp) {

				var self = this;

				if (this.method == "GET") {

					var totalurlstring = this.requestFile + "?" + this.URLString;

					this.xmlhttp.open(this.method, totalurlstring, true);

				} else {

					this.xmlhttp.open(this.method, this.requestFile, true);

				}

				if (this.method == "POST"){

  					try {

						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  

					} catch (e) {}

				}



				this.xmlhttp.send(this.URLString);

				this.xmlhttp.onreadystatechange = function() {

					switch (self.xmlhttp.readyState){

						case 1:

							self.onLoading();

						break;

						case 2:

							self.onLoaded();

						break;

						case 3:

							self.onInteractive();

						break;

						case 4:

							self.response = self.xmlhttp.responseText;

							self.responseXML = self.xmlhttp.responseXML;

							self.responseStatus[0] = self.xmlhttp.status;

							self.responseStatus[1] = self.xmlhttp.statusText;

							self.onCompletion();

							if(self.execute){ self.runResponse(); }

							if (self.elementObj) {

								var elemNodeName = self.elementObj.nodeName;

								elemNodeName.toLowerCase();

								if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){

									self.elementObj.value = self.response;

								} else {

									self.elementObj.innerHTML = self.response;

								}

							}

							self.URLString = "";

						break;

					}

				};

			}

		}

	};

this.createAJAX();

}











// fetching all information in a form

function formData2QueryString(docForm) {

	var strSubmitContent = '';

	var formElem;

	var strLastElemName = '';

	for (i = 0; i < docForm.elements.length; i++) {

		formElem = docForm.elements[i];

		switch (formElem.type) {

			// Text fields, hidden form elements

			case 'text':

			case 'hidden':

			case 'password':

			case 'textarea':

			case 'select-one':

				strSubmitContent += formElem.name + '=' + escape(formElem.value) + '&'

				break;

			// Radio buttons

			case 'radio':

				if (formElem.checked) {

					strSubmitContent += formElem.name + '=' + escape(formElem.value) + '&'

				}

				break;

			// Checkboxes

			case 'checkbox':

				if (formElem.checked) {

					// Continuing multiple, same-name checkboxes

					if (formElem.name == strLastElemName) {

						// Strip of end ampersand if there is one

						if (strSubmitContent.lastIndexOf('&') == strSubmitContent.length-1) {

							strSubmitContent = strSubmitContent.substr(0, strSubmitContent.length - 1);

						}

						// Append value as comma-delimited string

						strSubmitContent += ',' + escape(formElem.value);

					}

					else {

						strSubmitContent += formElem.name + '=' + escape(formElem.value);

					}

					strSubmitContent += '&';

					strLastElemName = formElem.name;

				}

				break;

		}

	}

	// Remove trailing separator

	strSubmitContent = strSubmitContent.substr(0, strSubmitContent.length - 1);

	return strSubmitContent;

}