function wisItem(childElement) {
	if (confirm('U staat op het punt dit item te wissen, weet u het zeker?')) {
		var form = getParentForm(childElement);
		var wisElement = document.createElement('INPUT');
		
		wisElement.setAttribute('name', 'wissen');
		wisElement.setAttribute('type', 'hidden');
		wisElement.value = 1;
						
		form.appendChild(wisElement);
		
		//alert(form);
		
		form.submit();
	}
	return false;
}

function submitForm(childElement) {
	var form = getParentForm(childElement);
		var wisElement = document.createElement('INPUT');
		
		wisElement.setAttribute('name', 'wissen');
		wisElement.setAttribute('type', 'hidden');
		wisElement.value = 0;
						
		form.appendChild(wisElement);	
	form.submit();
}

function getParentForm(innerElement) {
	if ((innerElement != 'undefined') && (innerElement.tagName == 'FORM')) {
		return innerElement;
	}
	var resultaat = innerElement;
	var teller = 0;
	while ((resultaat != 'undefined') && (resultaat.tagName != 'FORM')) {
		resultaat = resultaat.parentNode;
		teller++;
		if (teller == 50) {
			break;
		}
	}
	return resultaat;
}

/*WERKT NIET
function getStyle(el,styleProp) {
	var x = document.getElementById(el);
	if (x.currentStyle != 'undefined')
		var y = x.currentStyle[styleProp];
	else if (window.getComputedStyle)
		var y = document.defaultView.getComputedStyle(x,null).getPropertyValue(styleProp);
	return y;
}*/

function getViewportHeight() {
	if (window.innerHeight!=window.undefined) return window.innerHeight;
	if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
	if (document.body) return document.body.clientHeight; 
	return window.undefined; 
}

function getViewportWidth() {
	if (window.innerWidth!=window.undefined) return window.innerWidth; 
	if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth; 
	if (document.body) return document.body.clientWidth; 
	return window.undefined; 
}