function ExpandMenu(m_id,s_id, layerName){
		var menus = document.getElementsByTagName("div");	
		var selectedMenu = document.getElementById(s_id);
		var i, flag = false;
		
		
		
		for (i=0;i<menus.length;i++){			
			if (menus[i].id == m_id){				
				menus[i].className="menuLayer2";								
			}else if (menus[i].className == "menuLayer2"){
				HideSubMenuLayer();
				menus[i].className = "menuLayer2Hide";								
			}else if (menus[i].id == layerName)
				menus[i].style.visibility = "visible";		

		}
		
		selectedMenu.className = "activemmenu";		
	}
	
	function HideMenu(s_id, topic_id){
		var selectedMenu = document.getElementById(s_id);

		if (topic_id != ""){			
			if (selectedMenu.id != topic_id)
				selectedMenu.className = "mainmenu";
		}else{
			selectedMenu.className = "mainmenu"
		}
	}
	

	function ExpandLeftNav(m_id,s_id, title){
		var menus = document.getElementsByTagName("div");
		var selectedMenu = document.getElementById(s_id);
		var i, nav_title;
	

		 
		for (i=0;i<menus.length;i++){
			if (menus[i].id == m_id){				
				menus[i].className="expand_p";
			}
			else{
				nav_title = menus[i].id.substring(0,4);
				if (nav_title == title)
					menus[i].className="retract_p";
			}
		}		
	}
	
	function ExpandLeftNavLayer1(layer_id){
		var layer = document.getElementById(layer_id);
		layer.className = "expand_p";
		
	}

	function ShowSubmenu(smn_id, amn_id){
		var menu  = document.getElementById(smn_id);
		var mlink = document.getElementById(amn_id);
		
		menu.className = "menuLayerHover";
		mlink.className="activesmenu"

	}
	
	function HideSubmenu(smn_id, amn_id){
		var menu  = document.getElementById(smn_id);
		var mlink = document.getElementById(amn_id);

		menu.className ="msubmenu"
		mlink.className="submenu";
	}
	
	function ShowSubmenuLayer2(smn_id, amn_id, div_id){
		var showDiv = document.getElementById(div_id);
		
		HideSubMenuLayer();
			
		ShowSubmenu(smn_id, amn_id);
		showDiv.className = "menuLayer3";
	}
	
	
	
	function HideSubMenuLayer(){
		var allDiv = document.getElementsByTagName("div");
		var allTD = document.getElementsByTagName("td");
		var allA = document.getElementsByTagName("a");
		var test="Content: ";
		
		var submenuItem;
		var i;	
		
		for (i=0;i<allDiv.length;i++){
			submenuItem = allDiv[i];
			test = test + submenuItem.id + "-" + submenuItem.className + "; ";
			if (submenuItem.className == "menuLayer3"){
				submenuItem.className = "menuLayer3Hide";				
			}
		}			
		
		for (i=0;i<allTD.length;i++){
			submenuItem = allTD[i];
			if (submenuItem.className == "menuLayerHover")
				submenuItem.className = "msubmenu";
		}
		
		for (i=0;i<allA.length;i++){
			submenuItem = allA[i];
			if (submenuItem.className == "activesmenu")
				submenuItem.className = "submenu"
		}

	}
	
	function HideAllLayer(layerName){
		var allDiv = document.getElementsByTagName("div");
		HideSubMenuLayer();
		
		for (i=0;i<allDiv.length;i++){
			if (allDiv[i].id == layerName)
				allDiv[i].style.visibility = "hidden";
			else if(allDiv[i].className == "menuLayer2")
				allDiv[i].className = "menuLayer2Hide";
		}
	}
	
	
	function HighlightMenu(menu_name){
		var menu = document.getElementById(menu_name);
		
		menu.className="activemmenu"
	}
	
	function NavSwap(name,flag){
		var i, anItem;
		var items = document.getElementsByName(name);
		var text;
		
		
		
		for (i=0;i<items.length;i++){
			anItem = items[i];			
			if (flag == "on") {
				if(anItem.tagName == "IMG")				
					anItem.src = "../images/img_10.gif";
				else if (anItem.tagName == "A"){					
					anItem.className = "leftNavActive";					
				}
			}else if (flag == "off"){
				if(anItem.tagName == "IMG")				
					anItem.src = "../images/spacer.gif";
				else if (anItem.tagName == "A"){
					anItem.className = "leftnav";
				}
			}				
		}
	}
	
	function NavSwap_ch(name,flag){
		var i, anItem;
		var items = document.getElementsByName(name);
		var text;
		
		
		
		for (i=0;i<items.length;i++){
			anItem = items[i];			
			if (flag == "on") {
				if(anItem.tagName == "IMG")				
					anItem.src = "../../images/img_10.gif";
				else if (anItem.tagName == "A"){					
					anItem.className = "leftNavActive";					
				}
			}else if (flag == "off"){
				if(anItem.tagName == "IMG")				
					anItem.src = "../../images/spacer.gif";
				else if (anItem.tagName == "A"){
					anItem.className = "leftnav";
				}
			}				
		}
	}

	
	function MainNavSwap(name,flag){
		var item = document.getElementById(name);
		
		if (flag == "on") {
				item.className = "mleftNavHover";
		}else if (flag == "off"){
				item.className = "leftnav";
		}
		
	}

	
	function ShowAddress(linkSrc, winStyle){
		window.open(linkSrc, "_blank", winStyle)
	}
	
	function NavJump(targ,selObj,restore){ 
		eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
	
		selObj.options[selObj.selectedIndex].selected = 'selected';
	}
	
	function ShowContent(linkSrc, winStyle){
		ShowAddress(linkSrc, winStyle);
	}
	
	
	function check_input(lang){
		var title, purpose, name, email, comment
		var atPos, dotPos
		
		title = document.getElementById("title").value;
		purpose = document.getElementById("leixing").value;
		name = document.getElementById("name").value;
		email = document.getElementById("email").value;
		comment = document.getElementById("comment").value;
		
		if (title == "" || purpose == "" || name == "" || email == "" || comment == ""){
			if (lang=="0") {
				alert("Please fill out the mandatory fields.");
			}else{
				alert("必填项不能为空.");
			}
			return false;
		}
		
		atPos = email.indexOf("@")
		dotPos = email.lastIndexOf(".")
		
		if (atPos < 1 || dotPos-atPos < 2){
			if (lang=="0") {		
				alert("Incorrect email address.");
			}else{
				alert("Email地址不正确");
			}
			return false;
		}
		else
			return true;
	
		return true;
			 
	}
	
	function check_survey(lang){
		var company;
		
		company = document.getElementById("company").value
		
		if (company == ""){
			if (lang=="0") {
				alert("Please fill out the mandatory fields.");
			}else{
				alert("必填项不能为空.");
			}
				
			return false;
		}
		
		return true;
	}
	
	function check_keyword(lang){
		var keyword;
		
		keyword = document.getElementById("keyword").value;
		
		
		if (keyword == ""){	
			if (lang=="0") {
				alert("Search keyword cannot be empty.");
			}else{
				alert("搜索关键字不能为空");
			}
			return false;
		}
		
		return true;
	}