function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}


function voorbereiden()
{
// variablen
var naam = '';
var waarde = '';

var elem = document.getElementById('arrowform').elements;
for(var i = 0; i < elem.length; i++)
{
var checkr = document.forms['arrowform'].elements[i];
var check = elem[i].name.split("_");

if (check[1]=='c'){
if (elem[i].value==""){
alert('Vul veld ' + check[0] + ' in!');
checkr.focus();
return false;
}
}

if (check[1]=='e'){
var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
if (!filter.test(elem[i].value)) {
alert('Vul een juist emailadres in!');
checkr.focus();
return false;
} 
}

if (elem[i].type=="radio"){
if (elem[i].checked) {
naam += elem[i].name + "|";
waarde += elem[i].value + "|";
}
}

if (elem[i].type=="checkbox"){
if (elem[i].checked){
naam += elem[i].name + "|";
waarde += elem[i].value + "|";
}
}

if (elem[i].type=="select-one"){
naam += elem[i].name + "|";
waarde += elem[i].value + "|";
}

if (elem[i].type=="textarea"){
naam += elem[i].name + "|";
waarde += elem[i].value + "|";
}

if (elem[i].type=="text"){
if (elem[i].value!=""){
naam += elem[i].name + "|";
waarde += elem[i].value + "|";
} 
}

}

document.arrowform.arrownamen.value = naam;
document.arrowform.arrowwaarden.value = waarde;
return true;
}