var currentphoto = 0;
var pars = '';

function showPopup(photo, num) {
		$('photolarge').src = photo;
		currentphoto = num;
}

function showPhotoNum(tmppars, addpars) {
	pars = tmppars;
	tmppars = (tmppars + '&photocur=' + addpars);
	var myAjax = new Ajax.Request('addons/addon.fotogalerie/ajax.php', {method: 'get', parameters: tmppars, onSuccess: function(transport) { showPopup(transport.responseText, addpars); }, evalScripts: true});
}

function showPrevious(total) {
	currentphoto = (currentphoto - 1);
	
	
	if (currentphoto < 0) {
		currentphoto = (total - 1);
	}
	
	showPhotoNum(pars, currentphoto);
}

function showNext(total) {
	currentphoto = (currentphoto + 1);
	
	if (currentphoto > (total - 1)) {
		currentphoto = 0;
	}
	
	showPhotoNum(pars, currentphoto);
}