function previewImage(galId,imgId) {
	window.open("pages/image_viewer.php?gallery="+galId+"&image="+imgId,"imageViewer","width=600, height=400");
}

function getAanbod(id) {
	document.getElementById('get_aanbod').value=id;
	document.frm_get_aanbod.submit();
}

function gotoMonth(month) {
	document.getElementById('month').value=month;
	document.frm_get_aanbod.submit();
}