/*****************************************************************************
* gnbMenu
*****************************************************************************/
function initNavigation(seq) {
	nav = document.getElementById("gnb");
	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("_on.gif", "_off.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("_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";
					suballA = this.submenu.getElementsByTagName("li");					
					for (i=0; i<suballA.length; i++) {
						if(suballA[i].getElementsByTagName("img").length == 0) continue;

						if (suballA[i].getElementsByTagName("img")[0].src.indexOf("_on.gif") != -1 ) {
							continue;
						}
						suballA[i].onmouseover = function() {
							subImage = this.getElementsByTagName("img")[0];
							if (subImage.src.indexOf("_on.gif") != -1) return false;
							subImage.src = subImage.src.replace("_off.gif","_on.gif");
						}
						suballA[i].onfocus = function() {
							subImage = this.getElementsByTagName("img")[0];
							if (subImage.src.indexOf("_on.gif") != -1) return false;
							subImage.src = subImage.src.replace("_off.gif","_on.gif");
						}
						suballA[i].onmouseout = function() {
							subImage = this.getElementsByTagName("img")[0];
							subImage.src = subImage.src.replace("_on.gif", "_off.gif");
						}
						suballA[i].onblur = function() {
							subImage = this.getElementsByTagName("img")[0];
							subImage.src = subImage.src.replace("_on.gif", "_off.gif");
						}
					}
				}
				nav.current = this;
			}
			nav.isOver = true;
		}
		nav.menuseq++;
		nav.menu[nav.menuseq] = navAnchor;
	}
	if (nav.menu[seq])
		nav.menu[seq].onmouseover();
}

/*****************************************************************************
* img over
*****************************************************************************/
function imgMenuOver(containderID) {
	var objwrap = document.getElementById(containderID);
	var imgMenu = objwrap.getElementsByTagName("a");

	for (i=0; i<imgMenu.length; i++) {
		if(imgMenu[i].getElementsByTagName("img").length == 0) continue;

		if (imgMenu[i].getElementsByTagName("img")[0].src.indexOf("_on.gif") != -1 ) {
			continue;
		}
		imgMenu[i].onmouseover = function() {
			subImage = this.getElementsByTagName("img")[0];
			if (subImage.src.indexOf("_on.gif") != -1) return false;
			subImage.src = subImage.src.replace("_off.gif","_on.gif");
		}
		imgMenu[i].onfocus = function() {
			subImage = this.getElementsByTagName("img")[0];
			if (subImage.src.indexOf("_over.gif") != -1) return false;
			subImage.src = subImage.src.replace("_off.gif","_on.gif");
		}
		imgMenu[i].onmouseout = function() {
			subImage = this.getElementsByTagName("img")[0];
			subImage.src = subImage.src.replace("_on.gif", "_off.gif");
		}
		imgMenu[i].onblur = function() {
			subImage = this.getElementsByTagName("img")[0];
			subImage.src = subImage.src.replace("_on.gif", "_off.gif");
		}
	}
}

// Tab Content
function initTabMenu(tabContainerID) {
	var tabContainer = document.getElementById(tabContainerID);
	var tabAnchor = tabContainer.getElementsByTagName("a");
	var i = 0;

	for(i=0; i<tabAnchor.length; i++) {
		if (tabAnchor.item(i).className == "tabclick")
			thismenu = tabAnchor.item(i);
		else
			continue;

		thismenu.container = tabContainer;
		thismenu.targetEl = document.getElementById(tabAnchor.item(i).href.split("#")[1]);
		thismenu.targetEl.style.display = "none";
		thismenu.imgEl = thismenu.getElementsByTagName("img").item(0);
		thismenu.onclick = function tabMenuClick() {
			currentmenu = this.container.current;
			if (currentmenu == this)
				return false;

			if (currentmenu) {
				currentmenu.targetEl.style.display = "none";
				if (currentmenu.imgEl) {
					currentmenu.imgEl.src = currentmenu.imgEl.src.replace("_on.gif", "_off.gif");
				} else {
					currentmenu.className = currentmenu.className.replace(" over", "");
				}
			}
			this.targetEl.style.display = "";
			if (this.imgEl) {
				this.imgEl.src = this.imgEl.src.replace("_off.gif", "_on.gif");
			} else {
				this.className += " over";
			}
			this.container.current = this;

			return false;
		};

		if (!thismenu.container.first)
			thismenu.container.first = thismenu;
	}
	if (tabContainer.first)
		tabContainer.first.onclick();
}

/*****************************************************************************
* 팝업창
*****************************************************************************/
function popup_window(url, winname, opt)
{
	window.open(url, winname, opt);
}
	
/*****************************************************************************
* 플레시 호출
*****************************************************************************/
function MakeFlash(ImgUrl,Wid,Hei){
	document.write("<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0' width='"+ Wid +"' height='"+ Hei +"'>");
	document.write("<param name='movie' value='"+ ImgUrl +"'>");
	document.write("<param name='quality' value='high'>");
	document.write("<param name='wmode' value='transparent'>");
	document.write("<embed src='"+ ImgUrl +"' width='"+ Wid +"' height='"+ Hei +"' quality='high' pluginspage='http://www.macromedia.com/go/getflashplayer' type='application/x-shockwave-flash' wmode='transparent'></embed></object>");
}

/*****************************************************************************
* 투데이 공지사항
*****************************************************************************/
function notice1(){
	document.getElementById("notice1").src="images/main/today_on.gif";
	document.getElementById("notice2").src="images/main/event_off.gif";
	document.getElementById("sub1").style.display="block";
	document.getElementById("sub2").style.display="none";
}
function notice2(){
	document.getElementById("notice1").src="images/main/today_off.gif";
	document.getElementById("notice2").src="images/main/event_on.gif";
	document.getElementById("sub1").style.display="none";
	document.getElementById("sub2").style.display="block";
}

/*****************************************************************************
* FAQ
*****************************************************************************/
function getFaqContent(number)
{
	var el = $("div[id^='tr-contents-']");
	var isIE = '\v' == 'v';
	for(var i=0; i<el.length; i++) {
		var el_subject = $(el[i]).parent().find(".faq_subject a");
		if (el[i].id == ('tr-contents-' + number)) {
			$('#tr-contents-' + number).toggle();
			if ($('#tr-contents-' + number).css('display') == 'block') {
				el_subject.text(el_subject.attr('title'));
				$(el[i]).parent().find('.faq_subject').css('font-weight','bold');
				$(el[i]).parents('td').css('background','#EEF4F8');
				$.get('?p=list', {mode:'view_count', number:number});
			} else {
				el_subject.text(el_subject.attr('alt'));
				$(el[i]).parent().find('.faq_subject').css('font-weight','');
				$(el[i]).parents('td').css('background','');
			}
		} else {
			el_subject.text(el_subject.attr('alt'));
			$('#' + el[i].id).hide();
			$(el[i]).parent().find('.faq_subject').css('font-weight','');
			$(el[i]).parent('td').css('background','');
		}
	}
}

/*****************************************************************************
* 저항 스크립트
*****************************************************************************/

var volts = 0;
var amperes = 0;
var ohms = 0;
var watts = 0;

// clear the boxes
function clearBoxes(form)
		{
		var f = document.frm;
		f.volts.value = "";              // clear the box(s)
		f.amperes.value = "";
		f.ohms.value = "";
		f.watts.value = "";

		f.volts.focus();        // set focus to first box
		}

// display the results
function showresults(form)
		{
		form.volts.value = volts;
		form.amperes.value = amperes;
		form.ohms.value = ohms;
		form.watts.value = watts;
		}

// do the calculation
function solve(form)
		{
		var f = document.frm;
		var i = 4;

		// check the number of values provided
		// and convert to variables 
		if(!f.volts.value) volts = 0;
				else volts = eval(f.volts.value);
		if(volts == 0) i--;

		if(!f.amperes.value) amperes = 0; 
				else amperes = eval(f.amperes.value);
		if(amperes == 0) i--;

		if(!f.ohms.value) ohms = 0;
				else ohms = eval(f.ohms.value);
		if(ohms == 0) i--;

		if(!f.watts.value) watts = 0;
				else watts = eval(f.watts.value);
		if(watts == 0) i--;

		// check the number of values provided          
		// ok? (we must have two values)
		if(i == 0) return;      
		if(i != 2)
				{
				// only one value provided... give him the word!
				// (shows a message box)        
				alert("\nError in values provided!  Enter only Two\n");
				return;
				}

		// check for which values have been provided
		// and do the appropriate calculation           

		// volts? 
		//  volts,  amperes,  ohms,  watts?
		if(volts != 0)
				{
				// volts provided
				// what else?
				if(amperes != 0)
						{
						// volts & amperes                                
						ohms = volts / amperes;
						watts = volts * amperes;                              
						}
				else if (ohms != 0)
						{
						// volts & ohms                                
						amperes =  volts / ohms;
						watts = (volts * volts) / ohms;                                
						}
				else if (watts != 0)
						{
						// volts & watts                                
						amperes = watts / volts;
						ohms = (volts * volts) / watts;                                
						}

				// display results
				showresults(f);                      
				f.volts.focus();
				return;     
				}

		// amperes?
		//  amperes, volts,  ohms,  watts?
		if(amperes != 0)
				{
				// amperes provided
				// what else?
				if (ohms != 0)
						{
						// amperes & ohms                                
						volts = amperes * ohms;
						watts = (amperes * amperes) * ohms;                                
						}
				else if (watts != 0)
						{
						// amperes & watts                                
						volts = watts / amperes;
						ohms = watts / (amperes * amperes);                        
						}

				// display results
				showresults(f);                      
				f.amperes.focus();
				return;
				}

		// we've done everything but ohms & watts
		//  ohms, amperes, volts,  watts?
		// ohms & watts                                
		amperes = Math.sqrt(watts / ohms);
		volts = Math.sqrt(watts * ohms);                   

		// display results
		showresults(f);                      
		f.ohms.focus();
		return;
}
 // done hiding