function NB_login(){
	hideDiv('kalender_div');
	showDiv('nblogin_div');
}
function showKalender(){
	hideDiv('nblogin_div');
	showDiv('kalender_div');
}



/******/


function showtext(id,txt){
	$(id).innerHTML = txt;
}
function hidetext(id){
	$(id).innerHTML = '';
}

function showDiv(id){
	$(id).setStyle("display", "block");
}


function hideDiv(id){
	$(id).setStyle("display", "none");
}

function showhideDiv(id,idt){
	$(idt).setStyle('display', 'none');
	$(id).setStyle('display', 'block');
}



/*kalender*/
function showAct(act){
	if(act=='---'){return;}
	postString = "q=act&act="+act;
	//alert(postString);
	var myAjax = new Ajax('ajax_php/calendar.php', {
	method: 'post',
	data: postString,
	onRequest: function() { 
		$('message_busy').setStyle("display", "block");				
		$('message_busy').innerHTML = '<img src="img/ajax-loader.gif"> Please wait... processing request...'; 
			},
	onComplete: function(req){
			//alert(req);
			$('message_busy').setStyle("display", "none");	
			$('rechtstekst').innerHTML = req;
			
	}
	}).request();
		
}





function setfocus(a_field_id) {
    $(a_field_id).focus();
}


function in_array(stringToSearch, arrayToSearch) {
    for (s = 0; s < arrayToSearch.length; s++) {
                thisEntry = arrayToSearch[s].toString();
                if (thisEntry == stringToSearch) {
                           return true;
                }
    }
    return false;
}

//return the value of the radio button that is checked
//return an empty string if none are checked, or
//there are no radio buttons
function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}

//set the radio button with the given value as being checked
//do nothing if there are no radio buttons
//if the given value does not exist, all the radio buttons
//are reset to unchecked
function setCheckedValue(radioObj, newValue) {
	if(!radioObj)
		return;
	var radioLength = radioObj.length;
	if(radioLength == undefined) {
		radioObj.checked = (radioObj.value == newValue.toString());
		return;
	}
	for(var i = 0; i < radioLength; i++) {
		radioObj[i].checked = false;
		if(radioObj[i].value == newValue.toString()) {
			radioObj[i].checked = true;
		}
	}
}

function roundNumber(rnum, rlength) { // Arguments: number to round, number of decimal places
	  var newnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
	  return newnumber;
}

function maakGetal(str){
	var newNumber = parseFloat(str.replace(',', '.'));
    return newNumber;
}