function toggle_post(id) {
    toggle('snap_post_sum'+id, 'inline');
    toggle('snap_post_view'+id, 'block');
}

function toggle_edit(id) {
    //toggle('post_text'+id, 'block');
    toggle('snap_post_text'+id, 'block');
    toggle('snap_post_edit'+id, 'block');
}

function toggle(id, type) {
    var e = document.getElementById(id);
    if(e.style.display == 'none')
        e.style.display = type;
    else
        e.style.display = 'none';
}


function preview(form_id) {
    urlq = SNAP_PREFIX + '/rpc/preview/';
    form = document.getElementById(form_id);
    text = form.post.value;
    div_preview = document.getElementById('snap_preview_addpost');
    var handleSuccess = function(o) {
        if(o.responseText !== undefined) {
            res = eval('(' + o.responseText + ')');
            div_preview.innerHTML = res['preview'];
            div_preview.parentNode.style.display = 'block';
        }
    };

    var handleFailure = function(o) {
        var errordiv = document.getElementById("thread_rpc_feedback");
        if(o.responseText !== undefined) {
            div_preview.innerHTML = "There was an error previewing your post.";
            div_preview.parentNode.style.display = 'block';
        }
    };
    var callback = {success:handleSuccess, failure:handleFailure, argument: []};
    YAHOO.util.Connect.setDefaultPostHeader(false);
    YAHOO.util.Connect.initHeader('Content-Type', 'text/plain', true);
    var request = YAHOO.util.Connect.asyncRequest('POST', urlq, callback, text);
}


function revision(orig_id, show_id) {
    urlq = SNAP_PREFIX + '/rpc/postrev/?orig=' + orig_id + '&show=' + show_id;

    div_text = document.getElementById('snap_post_text' + orig_id)
    div_links = document.getElementById('post_revision_links' + orig_id)

    var handleSuccess = function(o) {
        if(o.responseText !== undefined) {
            res = eval('(' + o.responseText + ')');
            div_text.innerHTML = res['text'];

            // create links content
            links_html = '';

            if(res['prev_id'] !== '') {
                links_html += '<a href="#post' + orig_id + '" onClick="revision(\'';
                //links_html += '<a href="#" onClick="revision(\'';
                links_html += orig_id + '\',\'' + res['prev_id'];
                links_html += '\');">&#171; previous</a>';
            }
            links_html += ' <b style="color: #c00;">This message has been revised</b> '
            if(res['rev_id'] !== '') {
                links_html += '<a href="#post' + orig_id + '" onClick="revision(\'';
                //links_html += '<a href="#" onClick="revision(\'';
                links_html += orig_id + '\',\'' + res['rev_id'];
                links_html += '\');">next &#187;</a>';
            }
            div_links.innerHTML = links_html;
        }
    };

    var handleFailure = function(o) {
        var errordiv = document.getElementById("thread_rpc_feedback");
        if(o.responseText !== undefined) {
            for (var n in o) {
                if (o.hasOwnProperty(n)) {
                    errordiv.innerHTML += o[n];
                }
            }
        }
    };

    var callback = {
      success:handleSuccess,
      failure:handleFailure,
      argument: []
    };

    var request = YAHOO.util.Connect.asyncRequest('GET', urlq, callback, null);
}


// --- yahoo connection stuff ---
function toggle_variable(action, oclass, oid, msgdivid) {
    // This function sends an RPC request to the server to toggle a
    // variable (usually a boolean).  The server response with text
    // to replace the button clicked and a status message.

    // TODO: oid should be renamed as oid
    var postData = 'action=' + action + '&oclass=' + oclass + '&oid=' + oid;
    var div = document.getElementById(action + oid);

    var handleSuccess = function(o) {
        if(o.responseText !== undefined) {
            res = eval('(' + o.responseText + ')');
            div.innerHTML = res['link'];
            document.getElementById(msgdivid).innerHTML = '<p class="rpc_message">' + res['msg'] + '</p>';
        }
    };

    var handleFailure = function(o) {
        var errordiv = document.getElementById("thread_rpc_feedback");
        if(o.responseText !== undefined) {
            div.innerHTML = "<b>ERROR</b>";
            for (var n in o) {
                if (o.hasOwnProperty(n)) {
                    errordiv.innerHTML += o[n];
                }
            }
        }
    };

    var callback =
    {
      success:handleSuccess,
      failure:handleFailure,
      argument:[]
    };

    var request = YAHOO.util.Connect.asyncRequest('POST', SNAP_PREFIX + '/rpc/action/', callback, postData);
}

// thread level functions
function set_csticky(id) { toggle_variable('csticky', 'thread', id, 'thread_rpc_feedback'); }
function set_gsticky(id) { toggle_variable('gsticky', 'thread', id, 'thread_rpc_feedback'); }
function set_watch(id) { toggle_variable('watch', 'thread', id, 'thread_rpc_feedback'); }
function set_close(id) { toggle_variable('close', 'thread', id, 'thread_rpc_feedback'); }

// post level function
function set_censor(id) { toggle_variable('censor', 'post', id, ('post_rpc_feedback' + id));}
function set_abuse(id) { toggle_variable('abuse', 'post', id, ('post_rpc_feedback' + id));}




/* =======================================================================
* Time Since
* January 16, 2004
*
* Time Since creates a string which friendly tells you the time since the
* original date Based on the original time_since() function by
* Natalie Downe - http://blog.natbat.co.uk/archive/2003/Jun/14/time_since
*
* Copyright (c) 2004 Mark Wubben - http://neo.dzygn.com/
*
* Usage: date.toTimeSinceString(number nLimit, string sBetween, string sLastBetween)
* nLimit: limit the shown time units (year, month etc). default = 2
* sBetween: string between two time units. default = ", "
* sLastBetween: string between the second-last and last time unit.
*               default = " and "
=========================================================================*/
Date.prototype.toTimeSinceString = function(nLimit, sBetween, sLastBetween){
	if(!nLimit){ nLimit = 2; }
	if(!sBetween){ sBetween = ", "; }
	if(!sLastBetween){ sLastBetween = " and "; }
	if(!Date.prototype.toTimeSinceString._collStructs){
		Date.prototype.toTimeSinceString._collStructs = new Array(
			{seconds: 60 * 60 * 24 * 365, name: "year"},
			{seconds: 60 * 60 * 24 * 30, name: "month"},
			{seconds: 60 * 60 * 24 * 7, name: "week"},
			{seconds: 60 * 60 * 24, name: "day"},
			{seconds: 60 * 60, name: "hour"},
			{seconds: 60, name: "minute"}
		);
	}

	var collStructs = Date.prototype.toTimeSinceString._collStructs;
	var nSecondsRemain = (new Date().valueOf() - this.valueOf()) / 1000;
	var sReturn = "";
	var nCount = 0;
	var nFloored;

	for(var i = 0; i < collStructs.length && nCount < nLimit; i++){
		nFloored = Math.floor(nSecondsRemain / collStructs[i].seconds);
		if(nFloored > 0){
			if(sReturn.length > 0){
				if(nCount == nLimit - 1 || i == collStructs.length - 1){
					sReturn += sLastBetween;
				} else if(nCount < nLimit && i < collStructs.length){
					sReturn += sBetween;
				}
			}
			sReturn += nFloored + " " + collStructs[i].name;
			if(nFloored > 1){
				sReturn += "s";
			}
			nSecondsRemain -= nFloored * collStructs[i].seconds;
			nCount++;
		}
	}

	return sReturn;
}


function procAllTimeSince() {
    elst = YAHOO.util.Dom.getElementsByClassName('datetime', 'span');
    for(var i=0; i < elst.length; i++){
        el = elst[i];
        datestr = new Date(el.innerHTML);
        tdisp = datestr.toTimeSinceString();
        if(tdisp == '') {
            /* blank values indicate a future time... */
            el.innerHTML = 'just now';
        } else {
            el.innerHTML = datestr.toTimeSinceString() + ' ago';
        }
    }
}