function zoekvenster() {
	var veld = document.getElementById('zoekwoord');
	var waarde = veld.value;
	
	if(waarde == 'trefwoord') {
		veld.value = '';
	}
	
	veld.className  = 'q_active';
}

function makevisible(cur,which){
	strength=(which==0)? 1 : 0.2
	
	if (cur.style.MozOpacity)
	cur.style.MozOpacity=strength
	else if (cur.filters)
	cur.filters.alpha.opacity=strength*100
}