function initNavigation(seq) {
	var nav = document.getElementById("topmenu");
	nav.menu = new Array();
	nav.current = null;
	nav.menuseq = 0;
	var navLen = nav.childNodes.length;
	
	var allA = nav.getElementsByTagName("a")
	for(var k = 0; k < allA.length; k++) {
		allA.item(k).onmouseover = allA.item(k).onfocus = function () {
			nav.isOver = true;
		}
		allA.item(k).onmouseout = allA.item(k).onblur = function () {
			nav.isOver = false;
			setTimeout(function () {
				if (nav.isOver == false) {
					if (nav.menu[seq])
						nav.menu[seq].onmouseover();
					else if(nav.current) {
						menuImg = nav.current.childNodes.item(0);
						menuImg.src = menuImg.src.replace("_on.gif", "_off.gif");
						if (nav.current.submenu)
							nav.current.submenu.style.display = "none";
						nav.current = null;
					}
				}
			}, 5000);
		}
	}

	for (var i = 0; i < navLen; i++) {
		var navItem = nav.childNodes.item(i);
		if (navItem.tagName != "LI")
			continue;

		navAnchor = navItem.getElementsByTagName("a").item(0);
		navAnchor.submenu = navItem.getElementsByTagName("ul").item(0);
		
		navAnchor.onmouseover = navAnchor.onfocus = function () {
			if (nav.current) {
				menuImg = nav.current.childNodes.item(0);
				menuImg.src = menuImg.src.replace("_on.gif", "_off.gif");
				if (nav.current.submenu)
					nav.current.submenu.style.display = "none";
				nav.current = null;
			}
			if (nav.current != this) {
				menuImg = this.childNodes.item(0);
				menuImg.src = menuImg.src.replace("_off.gif", "_on.gif");
				if (this.submenu)
					this.submenu.style.display = "block";
				nav.current = this;
			}
			nav.isOver = true;
		}
		nav.menuseq++;
		nav.menu[nav.menuseq] = navAnchor;
	}
	if (nav.menu[seq])
		nav.menu[seq].onmouseover();		
}

function initNavigation_top(seq) {
	var nav = document.getElementById("topmenu_main");
	nav.menu = new Array();
	nav.current = null;
	nav.menuseq = 0;
	var navLen = nav.childNodes.length;
	
	var allA = nav.getElementsByTagName("a")
	for(var k = 0; k < allA.length; k++) {
		allA.item(k).onmouseover = allA.item(k).onfocus = function () {
			nav.isOver = true;
		}
		allA.item(k).onmouseout = allA.item(k).onblur = function () {
			nav.isOver = false;
			setTimeout(function () {
				if (nav.isOver == false) {
					if (nav.menu[seq])
						nav.menu[seq].onmouseover();
					else if(nav.current) {
						menuImg = nav.current.childNodes.item(0);
						menuImg.src = menuImg.src.replace("_on.gif", "_off.gif");
						if (nav.current.submenu)
							nav.current.submenu.style.display = "none";
						nav.current = null;
					}
				}
			}, 5000);
		}
	}

	for (var i = 0; i < navLen; i++) {
		var navItem = nav.childNodes.item(i);
		if (navItem.tagName != "LI")
			continue;

		navAnchor = navItem.getElementsByTagName("a").item(0);
		navAnchor.submenu = navItem.getElementsByTagName("ul").item(0);
		
		navAnchor.onmouseover = navAnchor.onfocus = function () {
			if (nav.current) {
				menuImg = nav.current.childNodes.item(0);
				menuImg.src = menuImg.src.replace("_on.gif", "_off.gif");
				if (nav.current.submenu)
					nav.current.submenu.style.display = "none";
				nav.current = null;
			}
			if (nav.current != this) {
				menuImg = this.childNodes.item(0);
				menuImg.src = menuImg.src.replace("_off.gif", "_on.gif");
				if (this.submenu)
					this.submenu.style.display = "block";
				nav.current = this;
			}
			nav.isOver = true;
		}
		nav.menuseq++;
		nav.menu[nav.menuseq] = navAnchor;
	}
	if (nav.menu[seq])
		nav.menu[seq].onmouseover();		
}

function ch_pic(index, index2)
{
		
	var obj1 = document.getElementById("main_pic" + index);
	var obj2 = document.getElementById("sub_pic"+index + "_" + index2);
	var obj3 = document.getElementById("li_"+index + "_" + index2);	
	var tmp_src = strReplace(obj2.src, ".thumb", ""); //½æ³×ÀÏ¿¡¼­ ¿øº»À̹ÌÁö·Î °æ·Îº¯°æ

	var len = 4;					//style class¼Ó¼º ÁÖ±â
	var len2 = 4;
	for (var i = 1;i <= len ; i++ )
	{
		for(var j = 1; j<=len2; j++){
			if (i == index && j==index2 )
			{				
				document.getElementById("li_" + i + "_" + j).className = "select";
			}else{
				document.getElementById("li_" + i + "_" + j).className = ""	;
			}
		}
	}
	
	obj1.src = tmp_src;
	obj1.alt = obj2.alt;
	
	//document.getElementById("main_pic_title").innerHTML = obj2.alt;
	
}
function strReplace(str, src, dest)
{
	var reg = new RegExp(src, "gi");
	return str.replace(reg, dest);
}