function myChgPic(myPicURL,myImgTagName){
	document.images[myImgTagName].src = myPicURL;
}
/* Display */
function display($val) {
	if($val=='t'){
		document.getElementById("list_t").style.display = "block";
		document.getElementById("list_n").style.display = "none";
		document.getElementById("list_e").style.display = "none";
		document.getElementById("list_b").style.display = "none";
		document.getElementById("tab_t").innerHTML = "<img src=\"images/tab_topics_on.gif\" id=\"tab_t\" alt=\"\" />";
		document.getElementById("tab_n").innerHTML = "<img src=\"images/tab_news.gif\" id=\"tab_n\" alt=\"\" />";
		document.getElementById("tab_e").innerHTML = "<img src=\"images/tab_event.gif\" id=\"tab_e\" alt=\"\" />";
		document.getElementById("tab_b").innerHTML = "<img src=\"images/tab_bosyu.gif\" id=\"tab_b\" alt=\"\" />";
	}else if($val=='n'){
		document.getElementById("list_t").style.display = "none";
		document.getElementById("list_n").style.display = "block";
		document.getElementById("list_e").style.display = "none";
		document.getElementById("list_b").style.display = "none";
		document.getElementById("tab_t").innerHTML = "<img src=\"images/tab_topics.gif\" id=\"tab_t\" alt=\"\" />";
		document.getElementById("tab_n").innerHTML = "<img src=\"images/tab_news_on.gif\" id=\"tab_n\" alt=\"\" />";
		document.getElementById("tab_e").innerHTML = "<img src=\"images/tab_event.gif\" id=\"tab_e\" alt=\"\" />";
		document.getElementById("tab_b").innerHTML = "<img src=\"images/tab_bosyu.gif\" id=\"tab_b\" alt=\"\" />";
	}else if($val=='e'){
		document.getElementById("list_t").style.display = "none";
		document.getElementById("list_n").style.display = "none";
		document.getElementById("list_e").style.display = "block";
		document.getElementById("list_b").style.display = "none";
		document.getElementById("tab_t").innerHTML = "<img src=\"images/tab_topics.gif\" id=\"tab_t\" alt=\"\" />";
		document.getElementById("tab_n").innerHTML = "<img src=\"images/tab_news.gif\" id=\"tab_n\" alt=\"\" />";
		document.getElementById("tab_e").innerHTML = "<img src=\"images/tab_event_on.gif\" id=\"tab_e\" alt=\"\" />";
		document.getElementById("tab_b").innerHTML = "<img src=\"images/tab_bosyu.gif\" id=\"tab_b\" alt=\"\" />";
	}else if($val=='b'){
		document.getElementById("list_t").style.display = "none";
		document.getElementById("list_n").style.display = "none";
		document.getElementById("list_e").style.display = "none";
		document.getElementById("list_b").style.display = "block";
		document.getElementById("tab_t").innerHTML = "<img src=\"images/tab_topics.gif\" id=\"tab_t\" alt=\"\" />";
		document.getElementById("tab_n").innerHTML = "<img src=\"images/tab_news.gif\" id=\"tab_n\" alt=\"\" />";
		document.getElementById("tab_e").innerHTML = "<img src=\"images/tab_event.gif\" id=\"tab_e\" alt=\"\" />";
		document.getElementById("tab_b").innerHTML = "<img src=\"images/tab_bosyu_on.gif\" id=\"tab_b\" alt=\"\" />";
	}
	KcCookieWrite('kctab', $val, 1);
}
function KcCookieWrite(kword, kdata, kday){
	sday = new Date();
	sday.setTime(sday.getTime() + (kday * 1000 * 60 * 60 * 24));
	s2day = sday.toGMTString();
	document.cookie = kword + "=" + escape(kdata) + ";expires=" + s2day;
}
function KcCookieRead(kword){
	if(typeof(kword) == "undefined")
		return "";
	kword = kword + "=";
	kdata = "";
	scookie = document.cookie + ";";
	start = scookie.indexOf(kword);
	if (start != -1){
		end = scookie.indexOf(";", start);
		kdata = unescape(scookie.substring(start + kword.length, end));
	}
	return kdata;
}