// JavaScript Document

function getNewXmlHttpRequest() {
        var httpRequest;

        if (window.XMLHttpRequest) { // Mozilla, Safari, ...
            httpRequest = new XMLHttpRequest();
            if (httpRequest.overrideMimeType) {
                httpRequest.overrideMimeType('text/xml');
                // See note below about this line
            }
        } 
        else if (window.ActiveXObject) { // IE
            try {
                httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
                } 
                catch (e) {
                           try {
                                httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
                               } 
                             catch (e) {}
                          }
        }

        if (!httpRequest) {
            alert('Giving up :( Cannot create an XMLHTTP instance');
            return false;
        }
		
		return httpRequest;
}
	

var xmlRequest = getNewXmlHttpRequest();

function makeRequest(action,url,params,mydiv) {
	myChangeDiv = mydiv;
	if (action == "POST") { 
		xmlRequest.open('POST',url);
		xmlRequest.setRequestHeader("Content-type","application/x-www-form-urlencoded");
		xmlRequest.send(params);
	}else if (action == "GET") {
		xmlRequest.open('GET', url + '?' + params);
		xmlRequest.send();
	}
	xmlRequest.onreadystatechange = mycallbackfunction;
	// ...waiting statements go here...
    document.getElementById(myChangeDiv).innerHTML  ="<b><i>Versturen...</i></b>";
}



function mycallbackfunction() {
	if(xmlRequest.readyState == 4 && xmlRequest.status == 200) {
    /////////////////////////////////////////////////////////////////////
	// only if "OK"
	document.getElementById(myChangeDiv).innerHTML = xmlRequest.responseText;
	
	xmlRequest = false;
	};
}





    function alertContents(mydiv) {
    // only if req shows "loaded"
	if (httpRequest.readyState == 4) {
        // only if "OK"
	    /////////////////////////////////////////////////////////////////////
		document.getElementById(mydiv).innerHTML = httpRequest.responseText;
		/////////////////////////////////////////////////////////////////////
			if (httpRequest.status == 200) {
            // ...processing statements go here...
			
			} else {
                alert('There was a problem with the request.');
            }
        }

    }
	
	function updateForm(args) {
		var myF = args.split(";");
		for(i=0;i < myF.length;i++){
			eval(myF[i]);
		};
	}
	
	function showWarning(warning){
		alert('KDOEHET');
		document.getElementById('warning').style.display = "block";
		
	}
	

function prevFormField(field,templatename) {
	if (field.value.length == 0) {
		field.className='formFieldexample';
		field.value = templatename;
	}else if (field.value == templatename) {
		field.className='';
		field.value = '';
	}
}