function $(id){return document.getElementById(id); }

function $body(){ return document.getElementsByTagName('body')[0]; }

function addEvent(el, evname, func){
    try{
        if(el.attachEvent){
            el.attachEvent('on'+evname, func);
        } else if(el.addEventListener){
            el.addEventListener(evname, func, true);
        } else {
            el['on'+evname] = func;
        }
    } catch (error){}
}

function redirect(url){
    var href = document.getElementsByTagName('base')[0].href;
    window.location = href+url;
}

function new_password(id){
    try{
        var letter = ["2", "3", "4", "5", "6", "8", "a", "b", "c", "d", "e", "f", "g", "h", "k", "m", "n", "p", "r", "s", "t", "u", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "R", "S", "T", "W", "X", "Y"];
        var password = "";
        for( var i=0; i<=7; i++ ){
            var number = Math.round(Math.random()*(letter.length - 1));
            password += letter[number];
        }
        $(id).value = password;
    }catch(err){
        console.log(err);
    }
}

function admin_change_pw(pw_id, hidden_id, button_id){
    try{
        var pw = $(pw_id);
        var hidden = $(hidden_id);
        var button = $(button_id);
        hidden.value = 'true';
        pw.style.display = 'block';
        button.className = 'hide';
    }catch(err){
        console.log(err);
    }
}

function newCommName(){
    var dropdown = document.getElementById('community_name');
    var commName = document.getElementById('new_community');
    if(dropdown.value == '0'){
        commName.disabled = false;
    }else{
        commName.disabled = true;
    }
}

var WDCredits=new Array;
var WDNames=new Array;

var redir_timeout=null;
var redir_remaining=0;
var redir_path='';

function setRedirTimeout(seconds,path) {
	redir_path=path;
	
	seconds++;
	redir_remaining=seconds*1000;
	redir_timeout=setTimeout('redirSecondCallback();',1000);
}

function redirSecondCallback() {
	if (redir_remaining<1) {
		window.location=redir_path;
		clearTimeout(redir_timeout);
	} else {
		redir_remaining-=1000;
		redir_timeout=setTimeout('redirSecondCallback();',1000);
	}
	
	var seconds_remaining=Math.round(redir_remaining/1000);
	if (seconds_remaining==1)
		var redir_text='in '+seconds_remaining+' second';
	else if (seconds_remaining==0)
		var redir_text='';
	else
		var redir_text='in '+seconds_remaining+' seconds';
	
	$('redir_seconds').innerHTML=redir_text;
}

function clearRedirTimeout() {
	if (redir_timeout)
		clearTimeout(redir_timeout);
	
	var parent=$('redir_alert').parentNode;
	parent.removeChild($('redir_alert'));
}