/* Menu-controle voor Wiersma */

var currentelement;
var teller;

function show(item) {
	if (document.getElementById(item + '_kleurvlak').style.display != 'inline'){
		hideAll();
		if (document.getElementById(item + '_kleurvlak')) {
			document.getElementById(item + '_kleurvlak').style.display = 'inline'; 
		} 
		if (document.getElementById(item)) {
			document.getElementById(item).style.display = 'inline';
			currentelement = document.getElementById(item);
			teller = 0;
			luxaflex();		
		} 
	}
}

function luxaflex() {
	if (teller > 23) { teller = 23; } 
	currentelement.style.lineHeight = teller/20;
	currentelement.style.opacity = '' + teller/23 + ';';
	currentelement.style.filter= 'alpha(opacity='+teller * 4+')';
	teller++;
	if (teller < 23) {
		setTimeout('luxaflex()',5);
	}
}

// www.sean.co.uk
function pausecomp(millis) {
	var date = new Date();
	var curDate = null;
	do { curDate = new Date(); } while(curDate-date < millis);
} 

function hideAll() {
	for (i=1; i<15; i++) {
		if (document.getElementById('sub' + i)) {
			document.getElementById('sub' + i).style.display = 'none';
		}	
		if (document.getElementById('sub'+i+'_kleurvlak')) {
			document.getElementById('sub'+ i + '_kleurvlak').style.display = 'none';
		}
	}
}

function showSector(sector) {
	if (document.getElementById('selected_sector')) {
		document.getElementById('selected_sector').innerHTML = sector;
	}
	if (document.getElementById('icoontje_' + sector) ) {
		document.getElementById('icoontje_' + sector).src = 'images/icoontje_'+sector + '_over.jpg';
	}
}

function hideSector(sector) {
	if (document.getElementById('icoontje_' + sector).className != '_over' ) {
		if (document.getElementById('icoontje_' + sector) ) {
			document.getElementById('icoontje_' + sector).src = 'images/icoontje_'+sector + '.jpg';
		}
	}
}