var photos_display = "none";
var action_photos = "";

function toggle_comments(post_id) {
	if (document.getElementById("blog_comments").style.display == "block") {
		document.getElementById("blog_comments").style.display = "none";
		document.getElementById("btn_comment").innerHTML = "+";
	} else {
		document.getElementById("blog_comments").style.display = "block";
		document.getElementById("btn_comment").innerHTML = "-";
	}
}

function toggle_photos() {
	if (photos_display == "none")
		action_photos = window.setInterval("photosShow()",250);
	else
		action_photos = window.setInterval("photosHide()",250);
		
	if (photos_display == "none")
		action_opacity = window.setInterval("photosFadeIn()",300);
	else
		action_opacity = window.setInterval("photosFadeOut()",300);				


}

function photosShow() {
	if (document.getElementById("photo_1").style.display == "none")
		document.getElementById("photo_1").style.display = "block";
	else if (document.getElementById("photo_2").style.display == "none") 
		document.getElementById("photo_2").style.display = "block";
	else if (document.getElementById("photo_3").style.display == "none") 
		document.getElementById("photo_3").style.display = "block";
	else if (document.getElementById("photo_4").style.display == "none") {
		document.getElementById("photo_4").style.display = "block";	
		photos_display = "block";
	}
	if (photos_display == "block")
		window.clearInterval(action_photos);
}

function photosHide() {
	if (document.getElementById("photo_4").style.display == "block")
		document.getElementById("photo_4").style.display = "none";
	else if (document.getElementById("photo_3").style.display == "block") 
		document.getElementById("photo_3").style.display = "none";
	else if (document.getElementById("photo_2").style.display == "block") 
		document.getElementById("photo_2").style.display = "none";
	else if (document.getElementById("photo_1").style.display == "block") {
		document.getElementById("photo_1").style.display = "none";			
		photos_display = "none";
	}
	if (photos_display == "none")
		window.clearInterval(action_photos);
}

function photosFadeIn() {
	for (var i = 1; i<5; i++) {
		var opacity = parseFloat(document.getElementById("photo_"+i).style.opacity);
		opacity += 0.2;
		document.getElementById("photo_"+i).style.opacity = opacity;
		if (opacity == 1)
			window.clearInterval(action_opacity);
	}
}

function photosFadeOut() {
	for (var i = 1; i<5; i++) {
		var opacity = parseFloat(document.getElementById("photo_"+i).style.opacity);
		opacity -= 0.2;
		document.getElementById("photo_"+i).style.opacity = opacity;
		if (opacity == 0)
			window.clearInterval(action_opacity);
	}
}

function comment_replyto(parent_id,comments_name,comments_text) {
	var replyto = "Replying to "+comments_name+"'s comment:<br>\""+comments_text+"\"";
	document.getElementById("comments_replyto").innerHTML = replyto;
	document.getElementById("comments_replyto").style.display = "block";
	document.forms.addcomment.parent_id.value = parent_id;
}