function confirm_entry(okurl,msg)
{
	input_box=confirm(msg);
	
	if (input_box==true)
	{
		document.location.href = okurl;
	}
}

function openDoc(url)
{
	alert("open het bestand: " + url);
}

function checkStateBoxes(object, values, form_name)
{
	if (object.checked)
	{
		var values_array = values.split("__");

		for (var i=0 ; i<values_array.length ; i++)
		{
			document.forms[form_name][values_array[i]].checked = false;
		}
	}
}

/* zoekmachine */
function changeCities( newprov ) {
	currentprov = document.getElementById( 'currentprov' );
	currentprov_value = currentprov.value;
	closeThis = document.getElementById( 'prov_' + currentprov_value );
	closeThis.style.display='none';
	clearList( 'prov_' + currentprov_value );	
	
	if(!newprov){
		newprov = "";
	}
	openThis = document.getElementById( 'prov_' + newprov );
	openThis.style.display='block';
	currentprov.value = newprov;	
}


//clear all items in list
function clearList(targetType){
	targetList = document.getElementById( targetType );
	for(i=1;i<targetList.options.length;i++){
		if(targetList.options[i].selected){
			targetList.options[i].selected = false;
			}
		}
	}