// JavaScript Document

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

// 배너
var subPromv_count = 700;
var sub_func_promv_rolling = null;
var sub_rolling_time = 3000; // 롤링시간

function subPromv_imgRolling(){
	var source_li = document.getElementById("subPromotion_rollingImg").getElementsByTagName("a");
	var source_btn = document.getElementById("subPromotion_btn").getElementsByTagName("img");
	
	for(i=0; i<source_li.length; i++){
		source_li[i].style.display = "none";
	}
	for(i=0; i<source_btn.length; i++){
		source_btn[i].src = source_btn[i].src.replace("on.gif", ".gif");
	}
	
	var chg_imgNum = subPromv_count % source_li.length;
	source_li[chg_imgNum].style.display = "block";
	source_btn[chg_imgNum].src = source_btn[chg_imgNum].src.replace(".gif", "on.gif");

	subPromv_count++;
}

function subPromv_rolling_start(){
	if(!document.getElementById("subPromotion_rollingImg")) return false;
	if(!document.getElementById("subPromotion_btn")) return false;

	var source_img = document.getElementById("subPromotion_rollingImg").getElementsByTagName("a");
	var source_btn = document.getElementById("subPromotion_btn").getElementsByTagName("img");

	for(i=0; i<source_img.length; i++){
		source_img[i].onmouseover = function(){
			window.clearInterval(sub_func_promv_rolling);
		} // end of over
		
		source_img[i].onmouseout = function(){
			sub_func_promv_rolling = setInterval(subPromv_imgRolling, sub_rolling_time);
		} // end of out

		source_btn[i].count = i;
		source_btn[i].onmouseover = function(){
			subPromv_count = this.count;
			window.clearInterval(sub_func_promv_rolling);
			subPromv_imgRolling();
			sub_func_promv_rolling = setInterval(subPromv_imgRolling, sub_rolling_time);
		} // end of out
	}
	
	sub_func_promv_rolling = setInterval(subPromv_imgRolling, sub_rolling_time);
}
addLoadEvent(subPromv_rolling_start);

var mainPromv_count = 701;
var main_func_promv_rolling = null;
var main_rolling_time = 3000; // 롤링시간

function mainPromv_imgRolling(){
	var source_li = document.getElementById("mainPromotion_rollingImg").getElementsByTagName("a");
	var source_btn = document.getElementById("mainPromotion_btn").getElementsByTagName("img");
	
	for(i=0; i<source_li.length; i++){
		source_li[i].style.display = "none";
	}
	for(i=0; i<source_btn.length; i++){
		source_btn[i].src = source_btn[i].src.replace("on.gif", ".gif");
	}
	
	var chg_imgNum = mainPromv_count % source_li.length;
	source_li[chg_imgNum].style.display = "block";
	source_btn[chg_imgNum].src = source_btn[chg_imgNum].src.replace(".gif", "on.gif");

	mainPromv_count++;
}

function mainPromv_rolling_start(){
	if(!document.getElementById("mainPromotion_rollingImg")) return false;
	if(!document.getElementById("mainPromotion_btn")) return false;

	var source_img = document.getElementById("mainPromotion_rollingImg").getElementsByTagName("a");
	var source_btn = document.getElementById("mainPromotion_btn").getElementsByTagName("img");

	for(i=0; i<source_img.length; i++){
		source_img[i].onmouseover = function(){
			window.clearInterval(main_func_promv_rolling);
		} // end of over
		
		source_img[i].onmouseout = function(){
			main_func_promv_rolling = setInterval(mainPromv_imgRolling, main_rolling_time);
		} // end of out

		source_btn[i].count = i;
		source_btn[i].onmouseover = function(){
			mainPromv_count = this.count;
			window.clearInterval(main_func_promv_rolling);
			mainPromv_imgRolling();
			main_func_promv_rolling = setInterval(mainPromv_imgRolling, main_rolling_time);
		} // end of out
	}
	
	main_func_promv_rolling = setInterval(mainPromv_imgRolling, main_rolling_time);
}
addLoadEvent(mainPromv_rolling_start);


/* service tab (공지사항/이벤트) */
function noticeTab(){
	if(!document.getElementById("noticeTab")) return false;
	
	var layer_array = new Array();
	layer_array[0] = "noticeTab_list01";
	layer_array[1] = "noticeTab_list02";
	
	var source = document.getElementById("noticeTab").getElementsByTagName("img");
	
	source[2].parentNode.href = source[0].className;
	
	for(i=0; i<source.length-1; i++){
		source[i].count = i;
		source[i].onclick = function(){
			for(j=0; j<source.length-1; j++){
				source[j].src = source[j].src.replace("_on.gif", ".gif");
				document.getElementById(layer_array[j]).style.display = "none";
				source[2].parentNode.href = this.className;
			}
			this.src = this.src.replace(".gif", "_on.gif");
			document.getElementById(layer_array[this.count]).style.display = "block";
		} // end of onclick
	}
}
addLoadEvent(noticeTab);




function docu_tabmenu(num){
	var no = num
	var target = document.getElementById("docu_tab");
	var source = target.getElementsByTagName("img");
	var Maxnum = source.length;

	for(i=1; i <= Maxnum; i++){
			document.getElementById("tab0" + i).src = document.getElementById("tab0" + i).src.replace("_on", "_off");
			document.getElementById("tab_menu0" + i).style.display = 'none';
	}
		document.getElementById("tab0" + no).src = document.getElementById("tab0" + no).src.replace("_off", "_on");
		document.getElementById("tab_menu0" + no).style.display = 'block';
}


/* best_documentary   02 */

var xScrollTo = 0;
var xScrollFrom = 0;
var speed = 0;
var start = 0;
var func_PhRolling = null;
function documentary_action(){
	var target = document.getElementById("docu_linkCourse");

	if(xScrollTo > xScrollFrom){
		speed = Math.ceil((xScrollTo - xScrollFrom) * 0.1);
	}else if(xScrollTo <= xScrollFrom){
		speed = Math.floor((xScrollTo - xScrollFrom) * 0.1);
	}

	target.style.left = (parseInt(target.style.left, 10) + speed) + "px";
	xScrollFrom = parseInt(target.style.left, 10);
	
	if(Math.abs(Math.abs(xScrollTo) - Math.abs(xScrollFrom)) == 0){
		document.getElementById("docu_linkLeft").style.visibility = "visible";
		document.getElementById("docu_linkRight").style.visibility = "visible";
//		return false;
	} // end of if
	func_PhRolling = setTimeout ("documentary_action()", 36);
}

function documentary_rightMove_001(){
	 var target = document.getElementById("docu_linkCourse");
	 
	 var roll_turn = target.getElementsByTagName("LI").length;

	if(parseInt(target.style.left, 10) <= -(120*(roll_turn-4))){
		alert("마지막입니다");
		return false;
	} 
	
	document.getElementById("docu_linkLeft").style.visibility = "hidden";
	document.getElementById("docu_linkRight").style.visibility = "hidden";

	xScrollTo = parseInt(target.style.left, 10) - 500;
	clearTimeout(func_PhRolling);
	documentary_action();
}

function documentary_leftMove(){
	var target = document.getElementById("docu_linkCourse");
	
	if(parseInt(target.style.left, 10) == 0){
		alert("처음입니다");
		return false;
	}

	document.getElementById("docu_linkLeft").style.visibility = "hidden";
	document.getElementById("docu_linkRight").style.visibility = "hidden";

	xScrollTo = parseInt(target.style.left, 10) + 500;
	clearTimeout(func_PhRolling);
	documentary_action();
}

function best_documentary(){
	if(!document.getElementById("docu_linkCourse")) return false;
	var target = document.getElementById("docu_linkCourse");
	
	 
	var roll_turn = target.getElementsByTagName("LI");
	target.style.left = 0;
	target.style.top = "13px";
	target.style.width = (145 * roll_turn.length) + "px";

	document.getElementById("docu_linkLeft").onclick = function(){ 
		documentary_leftMove();
		return false;
	}
		
	document.getElementById("docu_linkRight").onclick = function(){
		documentary_rightMove_001();
		return false;
	}
	
	start = 1;
}
addLoadEvent(best_documentary);