function isIE(){
	var useragent = navigator.userAgent;
    if(useragent.indexOf('MSIE')>0)
		return true;
    else
		return false;
}
function HideContent(pop_id) {
	$(pop_id).style.display = "none";
}
function ShowContent(pop_id) {
	$(pop_id).style.display = "block";
	$(pop_id).style.visibility = "visible";
}
function showShadow(id){
	var topmenu_id = 'topmenu_' + id;
	var oMenu = $(topmenu_id);
	if(oMenu.className == 'topmenu_chr3')
		oMenu.className = 'topmenu_chr3 shadow_chr3'; 
	else
		oMenu.className = 'topmenu_chr2 shadow_chr2'; 
}
function hideShadow(id){
	var topmenu_id = 'topmenu_' + id;
	var oMenu = $(topmenu_id);
	if(oMenu.className == 'topmenu_chr3 shadow_chr3')
		oMenu.className = 'topmenu_chr3'; 
	else
		oMenu.className = 'topmenu_chr2'; 
}

function showBalloon(channel, post){
	var balloonID = 'balloon_' + channel + '_' + post;
	$(balloonID).parentNode.style.zIndex = 20;
	$(balloonID).style.display = 'block';
}
function hideBalloon(channel, post){
	var balloonID = 'balloon_' + channel + '_' + post;
	$(balloonID).parentNode.style.zIndex = 0;
	$(balloonID).style.display = 'none';
}
function hitChannelPost(channelID, title, author, link, date){
	var post = 'channelID=' + channelID + '&title=' + title + '&author=' + author + '&link=' + link + '&date=' + date;
	var sObj = new Ajax.Request(
    	'trunk/www/js/front.php',
	    {
		    method: 'post',
	    	postBody: post,
     		onComplete: function(m){}
  		}
 	);
}
function toggleBbs(channel, name){
	var search = 'channel_' + channel + '_search';
	var discuss = 'channel_' + channel + '_discuss';
	var oSearch = $(search);
	var oDiscuss = $(discuss);
	var oSearchTab = $(search + '_tab');
	var oDiscussTab = $(discuss + '_tab');
	if(name == 'search'){
		oSearch.className = 'search displayBlock';
		oDiscuss.className = 'discuss displayNone';
		oSearchTab.className = 'present';
		oDiscussTab.className = 'waiting';
		oDiscussTab.getElementsByTagName('span')[0].className = 'comment';
		oDiscussTab.getElementsByTagName('span')[0].innerHTML = '코멘트';
	} else {
		oSearch.className = 'search displayNone';
		oDiscuss.className = 'discuss displayBlock';
		oSearchTab.className = 'waiting';
		oDiscussTab.className = 'present';
		oDiscussTab.getElementsByTagName('span')[0].className = 'comment write';
		oDiscussTab.getElementsByTagName('span')[0].innerHTML = '쓰기';
	}
}

function togglePlaza(name, menu){
	//$('plazaArticle').getElementsByClassName('displayBlock')[0].className = 'displayNone';
	var dObj = $('plazaArticle').getElementsByTagName('div');
	for(i=0; i<dObj.length; i++) {
		dObj[i].className = 'displayNone';
	}
	$(name).className = 'displayBlock';
	//$('plaza').getElementsByClassName('presentTab')[0].className = '';
	var cObj = $('plaza').getElementsByClassName('presentTab');
	if(cObj) {
		cObj[0].className = '';
	}
	if(name == 'quicknews')
		menu.className = 'presentTab tab-style-1';
	else
		menu.className = 'presentTab tab-style-2';
}

function addOnloadFunctionAtFront(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            oldonload();
            func();
        }
    }
}

function frontNotice() {
}

addOnloadFunctionAtFront(frontNotice);