// gnbMenu
function initNavigation(seq) {
	nav = document.getElementById('gnbMenu');
	nav.menu = new Array();
	nav.current = null;
	nav.menuseq = 0;
	navLen = nav.childNodes.length;
	
	allA = nav.getElementsByTagName('a')
	for(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('_o.gif', '.gif');
						if (nav.current.submenu) {
							nav.current.submenu.style.display = 'none';
						}
						nav.current = null;
					}
				}
			}, 500);
		}
	}

	for (i = 0; i < navLen; i++) {
		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('_o.gif', '.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('.gif', '_o.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();
	}
}


/* tab js */
function jsTabChange(num) {
	for (var i = 1; i <= 3; i++) {
		var obj1 = document.getElementById('tit' + i);
		var obj2 = document.getElementById('h' + i) ;
		var obj3 = document.getElementById('tabList-' + i);
		if (i == num) {
			obj1.style.color = '#c33';
			obj2.style.borderBottom = '1px solid #fff';
			obj3.style.display = 'block';
		} else {
			obj1.style.color = '#000';
			obj2.style.borderBottom = '1px solid #dbdbdb';
			obj3.style.display = 'none';
		}
	}
}

// Image Roll-over
function imageOver(objImg) {
	objImg.src = objImg.src.replace('off.gif', 'on.gif');
}
function imageOut(objImg) {
	objImg.src = objImg.src.replace('on.gif', 'off.gif');
}

// Layer Show-Hide
function showLayer(tgtEl) {
	document.getElementById(tgtEl).style.display = 'block';
}
function hideLayer(tgtEl) {
	document.getElementById(tgtEl).style.display = 'none';
}