function doAjax(klasse,functie,element,parameters,extend,teller) {
	var elem = document.getElementById(element);
	elem.style.display = 'block';
	var params = '?call='+klasse+'/'+functie+'&'+parameters;
	
	var html = $.ajax({
	  url: "index.php"+params,
	  async: false
	 }).responseText;
	elem.innerHTML = html;
}

function doAjaxFade(klasse,functie,element,parameters,extend,teller) {
	var elem = document.getElementById(element);
	
	// Fade the element
	$("#" + element).fadeOut("fast", function () {								   
		elem.innerHTML = "";	
		
		var params = '?call='+klasse+'/'+functie+'&'+parameters;
		
		
			var html = $.ajax({
			  url: "index.php"+params,
			  async: false
			 }).responseText;
												  
			elem.innerHTML = html;
			elem.style.display = 'block';
		
	});
}

function hideDiv(id) {	
	var elem = document.getElementById(id);
	elem.style.display = 'none';
}

function hideDivFade(id){
	var elem = document.getElementById(id);
	$('#'+id).fadeOut('slow', function() {
	    // Animation complete.
		elem.style.display = 'none';
	});
}

function showDiv(element) {
	var elem = document.getElementById(element);
	elem.style.display = 'block';	
}

function changeLang(element,value) {
	var elem = document.getElementById(element);	
	elem.lang = value;
	hideDiv(element);
}

function emptyInput(element,text) {
	var elem = document.getElementById(element);	
	if(elem.value == text){
		elem.value = '';
	}
}