// JavaScript Document

var current_slide_picture = 0;

function slide_set_current(){
	var ul = document.getElementById('fotos_slide');
	var lis = ul.getElementsByTagName('li');
	var cant = lis.length;
	var ep = document.getElementById('img_epigrafe');
	
	for(i = 0; i < cant; i++){
		if(i == current_slide_picture){
			lis[i].className = 'current';
			var text = lis[i].getElementsByTagName('img')[0].alt;
			ep.innerHTML = '&nbsp;' + text;
		} else {
			lis[i].className = 'hide';
		}
	}
	
}

function slide_next(){
	var ul = document.getElementById('fotos_slide');
	var lis = ul.getElementsByTagName('li');
	var maximo = lis.length - 1;
	
	current_slide_picture = ((current_slide_picture == maximo) ? 0 : current_slide_picture + 1);
	slide_set_current();
	
}

function slide_prev(){
	var ul = document.getElementById('fotos_slide');
	var lis = ul.getElementsByTagName('li');
	var cant = lis.length;
	var maximo = lis.length - 1;
	
	current_slide_picture = ((current_slide_picture == 0) ? maximo : current_slide_picture - 1);
	slide_set_current();
}