function drawNav(navString,isIndex){
	var nav_cores = ["Vehicle Feature Recognition","Face Recognition","Body Recognition","Defect Recognition","Object Recognition","Video Structure Analysis","Text Recognition"]

	var nav_producets = [
		["Intelligent Transportation","images/page_6_img1.png",["Vehicle Feature Big Data Platform","Intelligent Monitoring System of Heavy Goods Vehicles","Video Traffic Information Analyzer","Unmanned Smart Parking Solution","Intelligent Expressway Self-help Toll Collection Solution"]],
		["Intelligent City","images/page_7_img1.png",["Intelligent Personnel Management Platform","Video Surveillance Platform for Crowd Trend Analysis","Portrait Big Data Management Platform","Video Structure Analysis Platform"
		]],
		["Intelligent Textile manufacturing","images/page_8_img1.png",["Intelligent Fabric Visual Inspection and Rating Management Platform","Spinning Cakes Appearance Monitor","Automatic Spinning Bobbin Sorting Device"]],
		["Intelligent Commerce","images/page_9_img1.png",["Video Big Data Solution to Smart Store","Automatic Stock-taking Solution","Complete Unmanned Retail Solution","AI Goalkeeper"]]
	]
	
	var nav_cases = [
		["All the Cases","case_analysis_allCases"],
		["Intelligent City","case_analysis_security"],
		["Intelligent transportation","case_analysis_traffic"],
		["Intelligent Commerce","case_analysis_business"],
		["Intelligent Manufacturing","case_analysis_spin"]
	]
	
	var nav_abouts = [
		["Corporate Profile","introduce"],
		["Contact Us","contact"],
		["Join Us","join"]
	]


// span  视语logo
	var nav_span = document.createElement("span");
	var nav_spanClass = document.createAttribute("class");
	nav_spanClass.value = "my_mail_span";
	var nav_spanClick = document.createAttribute("onclick");
	nav_spanClick.value = "javascript:window.open('"+navString+"index_en.html',name='_self ')";
	nav_span.setAttributeNode(nav_spanClass);
	nav_span.setAttributeNode(nav_spanClick);

		var nav_span_img = document.createElement("img");
		var nav_span_imgSrc = document.createAttribute("src");
		if(isIndex=="index_en"){
			nav_span_imgSrc.value = navString+"images/logo.png";
		}
		else{
			nav_span_imgSrc.value = navString+"images/logo_gules.png";
		}
		nav_span_img.setAttributeNode(nav_span_imgSrc);


	nav_span.appendChild(nav_span_img)



// li 核心技术
	var nav_li1 = document.createElement("li");
	var nav_li1Class = document.createAttribute("class");
	nav_li1Class.value = "sy1_li navli6";
	nav_li1.setAttributeNode(nav_li1Class);


		var nav_li1_a = document.createElement("a");
		nav_li1_a.innerText = "Core Technology" 
		var nav_li1_aClass = document.createAttribute("class");
		nav_li1_aClass.value = "sy1_tit my_navi_a my_navi_a1";
		var nav_li1_aHref = document.createAttribute("href");
		nav_li1_aHref.value = navString+"core_technology_en.html";
		nav_li1_a.setAttributeNode(nav_li1_aClass)
		nav_li1_a.setAttributeNode(nav_li1_aHref);
		
		var nav_li1_ul = document.createElement("ul");
		var nav_li1_ulClass = document.createAttribute("class");
		nav_li1_ulClass.value = "sy2_ul my_inside_ul_1";
		nav_li1_ul.setAttributeNode(nav_li1_ulClass)
			var nav_li1_ul_div = document.createElement("div");
			var nav_li1_ul_divClass = document.createAttribute("class");
			nav_li1_ul_divClass.value = "sy2_inside";
			nav_li1_ul_div.setAttributeNode(nav_li1_ul_divClass)
				for (i=0;i<nav_cores.length;i++){
					var tempNum = i+1;
					
					nav_li1_ul_li = document.createElement("li");
					nav_li1_ul_liClass = document.createAttribute("class");
					nav_li1_ul_liClass.value = "sy2_li navli"+tempNum;
					nav_li1_ul_li.setAttributeNode(nav_li1_ul_liClass)
					
						nav_li1_ul_li_a = document.createElement("a");
						nav_li1_ul_li_aClass = document.createAttribute("class");
						nav_li1_ul_li_aClass.value = "sy2_tit";
						nav_li1_ul_li_aId = document.createAttribute("id");
						nav_li1_ul_li_aId.value = "my_inside_ul_1"+tempNum;
						nav_li1_ul_li_aHref = document.createAttribute("href");
						nav_li1_ul_li_aHref.value = navString + "core_technology_en.html#f"+tempNum;
						nav_li1_ul_li_aTarget = document.createAttribute("target");
						nav_li1_ul_li_aTarget.value = "_self";
						nav_li1_ul_li_a.setAttributeNode(nav_li1_ul_li_aClass)
						nav_li1_ul_li_a.setAttributeNode(nav_li1_ul_li_aId)
						nav_li1_ul_li_a.setAttributeNode(nav_li1_ul_li_aHref)
						nav_li1_ul_li_a.setAttributeNode(nav_li1_ul_li_aTarget)
							nav_li1_ul_li_a_span = document.createElement("span");
							nav_li1_ul_li_a_spanClass = document.createAttribute("class");
							nav_li1_ul_li_a_spanClass.value = "navspan";
							nav_li1_ul_li_a_span.setAttributeNode(nav_li1_ul_li_a_spanClass)

							nav_li1_ul_li_a_span.innerText = nav_cores[i]
							
					nav_li1_ul_li_a.appendChild(nav_li1_ul_li_a_span)
					nav_li1_ul_li.appendChild(nav_li1_ul_li_a)

					nav_li1_ul_div.appendChild(nav_li1_ul_li)

				}
				var nav_li1_ul_div_divclear = document.createElement("div");
				var nav_li1_ul_div_divclearClass = document.createAttribute("class");
				nav_li1_ul_div_divclearClass.value = "clearit";
				nav_li1_ul_div_divclear.setAttributeNode(nav_li1_ul_div_divclearClass)
			nav_li1_ul_div.appendChild(nav_li1_ul_div_divclear)
		nav_li1_ul.appendChild(nav_li1_ul_div)	
		
	

	nav_li1.appendChild(nav_li1_a)
	nav_li1.appendChild(nav_li1_ul)


//li 产品服务
	var nav_li2 = document.createElement("li");
	var nav_li2Class = document.createAttribute("class");
	nav_li2Class.value = "sy1_li navli6";
	nav_li2.setAttributeNode(nav_li2Class);

		var nav_li2_a = document.createElement("a");
		nav_li2_a.innerText = "Product Service" 
		var nav_li2_aClass = document.createAttribute("class");
		nav_li2_aClass.value = "sy1_tit my_navi_a my_navi_a1";
		var nav_li2_aHref = document.createAttribute("href");
		nav_li2_aHref.value = navString+"product_service_en.html";
		nav_li2_a.setAttributeNode(nav_li2_aClass)
		nav_li2_a.setAttributeNode(nav_li2_aHref);
		
		var nav_li2_ul = document.createElement("ul");
		var nav_li2_ulClass = document.createAttribute("class");
		nav_li2_ulClass.value = "sy2_ul my_inside_ul_2";
		nav_li2_ul.setAttributeNode(nav_li2_ulClass)
		nav_li2_ul_id = document.createAttribute("id");
		nav_li2_ul_id.value = "navi_productService_en";
		nav_li2_ul.setAttributeNode(nav_li2_ul_id)

			var nav_li2_ulDiv = document.createElement("div");
			var nav_li2_ulDivClass = document.createAttribute("class");
			nav_li2_ulDivClass.value = "nav_proParent_en";
			nav_li2_ulDiv.setAttributeNode(nav_li2_ulDivClass);
				for(i=0;i<nav_producets.length;i++){
					i_tempNum = i+1
					
					nav_li2_ul_div = document.createElement("div");
					nav_li2_ul_divClass = document.createAttribute("class");
	// 				if(i<2)
	// 					nav_li2_ul_divClass.value = "sy1_inside my_sy1_inside floatL";
	// 				else
						nav_li2_ul_divClass.value = "sy2_inside my_sy2_inside floatL";

					// nav_li2_ul_divStyle = document.createAttribute("style");
					// nav_li2_ul_divStyle.value = "width: 40%;";
					nav_li2_ul_divId = document.createAttribute("id");
// 					if(i<2)
// 						nav_li2_ul_divId.value = "my_sy1_inside";
// 					else
						nav_li2_ul_divId.value = "my_sy2_inside";

					nav_li2_ul_div.setAttributeNode(nav_li2_ul_divClass)
					// nav_li2_ul_div.setAttributeNode(nav_li2_ul_divStyle)
					nav_li2_ul_div.setAttributeNode(nav_li2_ul_divId)

						nav_li2_ul_div_div = document.createElement("div");
						nav_li2_ul_div_divClass = document.createAttribute("class");
	// 					if(i<2)
	// 						nav_li2_ul_div_divClass.value = "my_sy1_inside_title";
	// 					else
							nav_li2_ul_div_divClass.value = "my_sy2_inside_title";
						nav_li2_ul_div_divClick = document.createAttribute("onclick");
						nav_li2_ul_div_divClick.value = "javascript:window.open('"+navString+"product_service_"+ i_tempNum +"_en.html',name='_self')";
						nav_li2_ul_div_div.setAttributeNode(nav_li2_ul_div_divClass)
						nav_li2_ul_div_div.setAttributeNode(nav_li2_ul_div_divClick)

							nav_li2_ul_div_div_img = document.createElement("img");
							nav_li2_ul_div_div_imgClass = document.createAttribute("src");
							nav_li2_ul_div_div_imgClass.value = navString + nav_producets[i][1];
							nav_li2_ul_div_div_img.setAttributeNode(nav_li2_ul_div_div_imgClass)
							nav_li2_ul_div_div.appendChild(nav_li2_ul_div_div_img)
							
							
							nav_li2_ul_div_div_span = document.createElement("span");
							nav_li2_ul_div_div_span.innerText = nav_producets[i][0];
							nav_li2_ul_div_div_spanStyle = document.createAttribute("style");
							nav_li2_ul_div_div_spanStyle.value = "padding:0 0 0 10px";
							nav_li2_ul_div_div_span.setAttributeNode(nav_li2_ul_div_div_spanStyle)
							
							nav_li2_ul_div_div.appendChild(nav_li2_ul_div_div_span)

						nav_li2_ul_div.appendChild(nav_li2_ul_div_div)
						for(j=0;j<nav_producets[i][2].length;j++){
							var j_tempNum = j+1;
							
							nav_li2_ul_div_li = document.createElement("li");
							
								nav_li2_ul_div_li_a = document.createElement("a");
								nav_li2_ul_div_li_aClass = document.createAttribute("class");
								nav_li2_ul_div_li_aClass.value = "sy2_tit";
								nav_li2_ul_div_li_aId = document.createAttribute("id");
								nav_li2_ul_div_li_aId.value = "my_inside_ul_2" + i_tempNum + j_tempNum;
								nav_li1_ul_div_li_aHref = document.createAttribute("href");
								nav_li1_ul_div_li_aHref.value = navString + "product_service_"+ i_tempNum +"_en.html#productServiceANone_"+ i_tempNum +"_"+ j_tempNum;
								nav_li1_ul_div_li_aTarget = document.createAttribute("target");
								nav_li1_ul_div_li_aTarget.value = "_self";
								nav_li2_ul_div_li_a.setAttributeNode(nav_li2_ul_div_li_aClass)
								nav_li2_ul_div_li_a.setAttributeNode(nav_li2_ul_div_li_aId)
								nav_li2_ul_div_li_a.setAttributeNode(nav_li1_ul_div_li_aHref)
								nav_li2_ul_div_li_a.setAttributeNode(nav_li1_ul_div_li_aTarget)
									nav_li1_ul_li_a_span = document.createElement("span");
									nav_li1_ul_li_a_spanClass = document.createAttribute("class");
									nav_li1_ul_li_a_spanClass.value = "navspan";
									nav_li1_ul_li_a_span.setAttributeNode(nav_li1_ul_li_a_spanClass)

									nav_li1_ul_li_a_span.innerText = nav_producets[i][2][j]
								
								
								nav_li2_ul_div_li_a.appendChild(nav_li1_ul_li_a_span)
							nav_li2_ul_div_li.appendChild(nav_li2_ul_div_li_a)
							nav_li2_ul_div.appendChild(nav_li2_ul_div_li)
						}
					
					nav_li2_ulDiv.appendChild(nav_li2_ul_div)
				}
			nav_li2_ul.appendChild(nav_li2_ulDiv)

	nav_li2.appendChild(nav_li2_a)
	nav_li2.appendChild(nav_li2_ul)
	
	
	
	
	
// li 案例分析
	var nav_li3 = document.createElement("li");
	var nav_li3Class = document.createAttribute("class");
	nav_li3Class.value = "sy1_li navli6";
	nav_li3.setAttributeNode(nav_li3Class);
	
	
		var nav_li3_a = document.createElement("a");
		nav_li3_a.innerText = "Case Analysis" 
		var nav_li3_aClass = document.createAttribute("class");
		nav_li3_aClass.value = "sy1_tit my_navi_a my_navi_a1";
		var nav_li3_aHref = document.createAttribute("href");
		nav_li3_aHref.value = navString+"case_analysis_en.html";
		nav_li3_a.setAttributeNode(nav_li3_aClass)
		nav_li3_a.setAttributeNode(nav_li3_aHref);
		
		var nav_li3_ul = document.createElement("ul");
		var nav_li3_ulClass = document.createAttribute("class");
		nav_li3_ulClass.value = "sy2_ul my_inside_ul_3";
		nav_li3_ul.setAttributeNode(nav_li3_ulClass)
			var nav_li3_ul_div = document.createElement("div");
			var nav_li3_ul_divClass = document.createAttribute("class");
			nav_li3_ul_divClass.value = "sy2_inside";
			nav_li3_ul_div.setAttributeNode(nav_li3_ul_divClass)
				for(i=0;i<nav_cases.length;i++){
					tempNum = i+1;
					var nav_li3_ul_div_li = document.createElement("li");
					var nav_li3_ul_div_liClass = document.createAttribute("class");
					nav_li3_ul_div_liClass.value = "sy2_li navli" + tempNum;
					nav_li3_ul_div_li.setAttributeNode(nav_li3_ul_div_liClass)
						var nav_li3_ul_div_li_a = document.createElement("a");
						var nav_li3_ul_div_li_aId = document.createAttribute("id");
						nav_li3_ul_div_li_aId.value = "my_inside_ul_3" + tempNum;
						var nav_li3_ul_div_li_aClass = document.createAttribute("class");
						nav_li3_ul_div_li_aClass.value = "sy2_tit";
						var nav_li3_ul_div_li_aHref = document.createAttribute("href");
						nav_li3_ul_div_li_aHref.value = navString + "case_analysis_en.html#" + nav_cases[i][1];
						var nav_li3_ul_div_li_aTarget = document.createAttribute("target");
						nav_li3_ul_div_li_aTarget.value = "_self";
						nav_li3_ul_div_li_a.setAttributeNode(nav_li3_ul_div_li_aId)
						nav_li3_ul_div_li_a.setAttributeNode(nav_li3_ul_div_li_aClass)
						nav_li3_ul_div_li_a.setAttributeNode(nav_li3_ul_div_li_aHref)
						nav_li3_ul_div_li_a.setAttributeNode(nav_li3_ul_div_li_aTarget)
							var nav_li3_ul_div_li_a_span = document.createElement("span");
							nav_li3_ul_div_li_a_span.innerText = nav_cases[i][0]
							var nav_li3_ul_div_li_a_spanClass = document.createAttribute("class");
							nav_li3_ul_div_li_a_spanClass.value = "navspan";
							nav_li3_ul_div_li_a_span.setAttributeNode(nav_li3_ul_div_li_a_spanClass)
							
							nav_li3_ul_div_li_a.appendChild(nav_li3_ul_div_li_a_span)
						nav_li3_ul_div_li.appendChild(nav_li3_ul_div_li_a)
					nav_li3_ul_div.appendChild(nav_li3_ul_div_li)	
				}
		nav_li3_ul.appendChild(nav_li3_ul_div)
	nav_li3.appendChild(nav_li3_a)
	nav_li3.appendChild(nav_li3_ul)

	
	
//li 行业资讯
	var nav_li4 = document.createElement("li");
	var nav_li4Class = document.createAttribute("class");
	nav_li4Class.value = "sy1_li navli6";
	nav_li4.setAttributeNode(nav_li4Class);
	
	
		var nav_li4_a = document.createElement("a");
		nav_li4_a.innerText = "Industry Advisory" 
		var nav_li4_aClass = document.createAttribute("class");
		nav_li4_aClass.value = "sy1_tit my_navi_a my_navi_a1";
		var nav_li4_aHref = document.createAttribute("href");
		nav_li4_aHref.value = navString+"news_information_en.html";
		nav_li4_a.setAttributeNode(nav_li4_aClass)
		nav_li4_a.setAttributeNode(nav_li4_aHref);
	nav_li4.appendChild(nav_li4_a)
	
	
	
//li 关于我们
	var nav_li5 = document.createElement("li");
	var nav_li5Class = document.createAttribute("class");
	nav_li5Class.value = "sy1_li navli6";
	nav_li5.setAttributeNode(nav_li5Class);
	
		var nav_li5_a = document.createElement("a");
		nav_li5_a.innerText = "About Us" 
		var nav_li5_aClass = document.createAttribute("class");
		nav_li5_aClass.value = "sy1_tit my_navi_a my_navi_a1";
		var nav_li5_aHref = document.createAttribute("href");
		nav_li5_aHref.value = navString+"about_us_en.html";
		nav_li5_a.setAttributeNode(nav_li5_aClass)
		nav_li5_a.setAttributeNode(nav_li5_aHref);
		
		var nav_li5_ul = document.createElement("ul");
		var nav_li5_ulClass = document.createAttribute("class");
		nav_li5_ulClass.value = "sy2_ul my_inside_ul_5";
		nav_li5_ul.setAttributeNode(nav_li5_ulClass)
			var nav_li5_ul_div = document.createElement("div");
			var nav_li5_ul_divClass = document.createAttribute("class");
			nav_li5_ul_divClass.value = "sy2_inside";
			nav_li5_ul_div.setAttributeNode(nav_li5_ul_divClass)
				for(i=0;i<nav_abouts.length;i++){
					i_tempNum = i+1;
					nav_li5_ul_div_li = document.createElement("li");
					nav_li5_ul_div_liClass = document.createAttribute("class");
					nav_li5_ul_div_liClass.value = "sy2_li navli" + i_tempNum;
					nav_li5_ul_div_li.setAttributeNode(nav_li5_ul_div_liClass)
						nav_li5_ul_div_li_a = document.createElement("a");
						nav_li5_ul_div_li_aClass = document.createAttribute("class");
						nav_li5_ul_div_li_aClass.value = "sy2_tit";
						nav_li5_ul_div_li_aId = document.createAttribute("id");
						nav_li5_ul_div_li_aId.value = "my_inside_ul_5" + i_tempNum;
						nav_li5_ul_div_li_aHref = document.createAttribute("href");
						nav_li5_ul_div_li_aHref.value = navString + "about_us_en.html#" + nav_abouts[i][1];
						nav_li5_ul_div_li_aTarget = document.createAttribute("target");
						nav_li5_ul_div_li_aTarget.value = "_self";
						nav_li5_ul_div_li_a.setAttributeNode(nav_li5_ul_div_li_aClass)
						nav_li5_ul_div_li_a.setAttributeNode(nav_li5_ul_div_li_aId)
						nav_li5_ul_div_li_a.setAttributeNode(nav_li5_ul_div_li_aHref)
						nav_li5_ul_div_li_a.setAttributeNode(nav_li5_ul_div_li_aTarget)
							nav_li5_ul_div_li_a_span = document.createElement("span");
							nav_li5_ul_div_li_a_span.innerText = nav_abouts[i][0]
							nav_li5_ul_div_li_a_spanClass = document.createAttribute("class");
							nav_li5_ul_div_li_a_spanClass.value = "navspan";
							nav_li5_ul_div_li_a_span.setAttributeNode(nav_li5_ul_div_li_a_spanClass)

						
						nav_li5_ul_div_li_a.appendChild(nav_li5_ul_div_li_a_span)
					nav_li5_ul_div_li.appendChild(nav_li5_ul_div_li_a)
					
					nav_li5_ul_div.appendChild(nav_li5_ul_div_li)
				}
				
		nav_li5_ul.appendChild(nav_li5_ul_div)	
	nav_li5.appendChild(nav_li5_a)
	nav_li5.appendChild(nav_li5_ul)


// li 语言
	var nav_li6 = document.createElement("li");
	var nav_li6Class = document.createAttribute("class");
	nav_li6Class.value = "sy1_li navli6";
	var nav_li6Id = document.createAttribute("id");
	nav_li6Id.value = "navi_language";
	nav_li6.setAttributeNode(nav_li6Class);
	nav_li6.setAttributeNode(nav_li6Id);

	
		var nav_li6_a = document.createElement("a");
		nav_li6_a.innerHTML = "<p>EN</p>&nbsp;&nbsp; | &nbsp;&nbsp;<p>中文</p>"
		var nav_li6_aClass = document.createAttribute("class");
		nav_li6_aClass.value = "sy1_tit my_navi_a my_navi_a1";
		var nav_li6_aHref = document.createAttribute("href");
		nav_li6_aHref.value = navString + "index.html";
		nav_li6_a.setAttributeNode(nav_li6_aClass);
		nav_li6_a.setAttributeNode(nav_li6_aHref);
	
	
	nav_li6.appendChild(nav_li6_a)		




// 追加
	document.getElementById("my_nav_con").appendChild(nav_span);
	document.getElementById("my_nav_con").appendChild(nav_li1);
	document.getElementById("my_nav_con").appendChild(nav_li2);
	document.getElementById("my_nav_con").appendChild(nav_li3);
	document.getElementById("my_nav_con").appendChild(nav_li4);
	document.getElementById("my_nav_con").appendChild(nav_li5);
	document.getElementById("my_nav_con").appendChild(nav_li6);
	
	
	
	var bodyWidth = window.innerWidth|| document.documentElement.clientWidth|| document.body.clientWidth;
	document.getElementById("navi_productService_en").style.width = bodyWidth+"px"
}