function OnEnter( field ) { if( field.value == field.defaultValue ) { field.value = "";} }
function OnExit( field ) { if( field.value == "" ) { field.value = field.defaultValue; } }  


var $=function (obj){
   return document.getElementById(obj);
}
function showTxt(Id1, Id2) {
    var check = document.getElementById(Id1);
    var txt = document.getElementById(Id2);
    if (check.checked) {
        txt.style.display = "block";
       
    }
    else {
        txt.style.display = "none";
       
    }
}

function showCountry() 
{
  if(document.myform.choosecountry[0].checked){
	  $("trcountry1").style.display="none";
	  $("trcountry2").style.display="block";
	  $("trcountry3").style.display="block";
	 
	 $("tel1").value="0086";
	 $("fax1").value="0086";
	 $("mobile1").value="0086";
	 
  }
    if(document.myform.choosecountry[1].checked){
	 
	  $("trcountry1").style.display="block";
	  $("trcountry2").style.display="none";
	  $("trcountry3").style.display="none";
	
	 $("tel1").value="";
	 $("fax1").value="";
	  $("tel2").value="";
	 $("fax2").value="";
	 $("mobile1").value="";
	
 }
      
}

var myreg1=/([a-z0-9A-Z]+[-|\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\.)+[a-zA-Z]{2,}$/

 function checkform()
 {
    if(document.myform.YourName.value=="" ||document.myform.YourName.value==null)
	{
	 alert("Please enter your name!");
	 return false;
	}
    else if(document.myform.YourName.value=="Fill in please")
	 {
	  alert("Please enter your name ");
	   return false;
	 }
    else if(document.myform.companyE.value==""||document.myform.companyE.value==null)
	{
	   alert("Please enter your company name!");
	   return false;
	   
	}
	else if(document.myform.companyE.value=="Fill in please")
	{
	  alert("Please enter your company name!");
	  return false;
	}
	 else if(document.myform.address.value==""||document.myform.address.value==null)
	{
	   alert("Please enter detail place!");
	   return false;
	   
	}
	else if(document.myform.address.value=="Fill in please")
	{
	  alert("Please enter detail place!");
	  return false;
	}
	 else if(document.myform.post.value==""||document.myform.post.value==null)
	{
	   alert("please enter post code");
	   return false;
	   
	}
	else if(document.myform.post.value=="Fill in please")
	{
	  alert("please enter post code!");
	  return false;
	}
	 else if(document.myform.tel3.value==""||document.myform.tel3.value==null)
	{
	   alert("Please enter tel");
	   return false;
	   
	}
	else if(document.myform.tel3.value=="Fill in please")
	{
	  alert("Please enter tel!");
	  return false;
	}
	 else if(document.myform.fax3.value==""||document.myform.fax3.value==null)
	{
	   alert("Please enter fax!");
	   return false;
	   
	}
	else if(document.myform.fax3.value=="Fill in please")
	{
	  alert("Please enter fax!");
	  return false;
	}
	 else if(document.myform.email.value==""||document.myform.email.value==null)
	{
	   alert("Please enter email");
	   return false;
	   
	}
	else if(document.myform.email.value=="Fill in please")
	{
	  alert("Please enter email!");
	  return false;
	}
   else if(!myreg1.test(document.myform.email.value))
   {
	 alert("Email format is error!");
	 document.myform.email.focus();
     return false;
   }
    else if(document.myform.website.value==""||document.myform.website.value==null)
	{
	   alert("Please enter website!");
	   return false;
	   
	}
	else if(document.myform.website.value=="Fill in please")
	{
	  alert("Please enter website!");
	  return false;
	}
	
	return true;
 }
 
 /*******validate 参展商***********/
 function checkform1()
 {
    if(document.myform.YourName.value=="" ||document.myform.YourName.value==null)
	{
	 alert("please enter your name!");
	 return false;
	}
    else if(document.myform.YourName.value=="Fill in please")
	 {
	  alert("please enter your name ");
	   return false;
	 }
    else if(document.myform.companyE.value==""||document.myform.companyE.value==null)
	{
	   alert("please enter company name!");
	   return false;
	   
	}
	else if(document.myform.companyE.value=="Fill in please")
	{
	  alert("please enter company name!");
	  return false;
	}
	 else if(document.myform.address.value==""||document.myform.address.value==null)
	{
	   alert("please enter detail place!");
	   return false;
	   
	}
	else if(document.myform.address.value=="Fill in please")
	{
	  alert("please enter detail place!");
	  return false;
	}
	 else if(document.myform.post.value==""||document.myform.post.value==null)
	{
	   alert("please enter post code!");
	   return false;
	   
	}
	else if(document.myform.post.value=="Fill in please")
	{
	  alert("please enter post code!");
	  return false;
	}
	 else if(document.myform.tel3.value==""||document.myform.tel3.value==null)
	{
	   alert("please enter tel!");
	   return false;
	   
	}
	else if(document.myform.tel3.value=="Fill in please")
	{
	  alert("please enter tel!");
	  return false;
	}
	 else if(document.myform.fax3.value==""||document.myform.fax3.value==null)
	{
	   alert("please enter fax!");
	   return false;
	   
	}
	else if(document.myform.fax3.value=="Fill in please")
	{
	  alert("please enter fax!");
	  return false;
	}
	 else if(document.myform.email.value==""||document.myform.email.value==null)
	{
	   alert("please enter email");
	   return false;
	   
	}
	else if(document.myform.email.value=="Fill in please")
	{
	  alert("please enter email!");
	  return false;
	}
   else if(!myreg1.test(document.myform.email.value))
   {
	 alert("the email format is error!");
	 document.myform.email.focus();
     return false;
   }
     else if(document.myform.website.value==""||document.myform.website.value==null)
	{
	   alert("please enter website!");
	   return false;
	   
	}
	else if(document.myform.website.value=="Fill in please")
	{
	  alert("please enter website!");
	  return false;
	}
	
    else if(document.getElementById("delegate_show").value=="")
	{
	   alert("please enter Booth No and Booth Fee!");
	   document.getElementById("delegate_show").focus() 
	    return false;
	   
	}
	return true;
 }

/*create xmlhttprequest*/

var http_request = false;
function send_request(method,url,content,responseType,callback){
	http_request=false;
	if(window.XMLHttpRequest){//Mozilla浏览器
		http_request=new XMLHttpRequest();
		if(http_request.overrideMimeType){
			http_request.overrideMimeType("text/xml");
		}
	}
	else{
		try{
			http_request=new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
				http_request=new ActiveXObject("Microsoft.XMLHTTP");
			}catch(e){}
		}
	}
	if(!http_request){
		window.alert("不能创建XMLHttpRequest对象实例。");
		return false;
	}
	if(responseType.toLowerCase()=="text"){
		http_request.onreadystatechange=callback;
	}else{
		
		window.alert("响应类别参数错误。");
		return false;
	}
	if(method.toLowerCase()=="get"){
		http_request.open(method,url,true);
	}
	else if(method.toLowerCase()=="post"){
		http_request.open(method,url,true);
		http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	}else{
		window.alert("http请求类别参数错误。");
		return false;
	}
	http_request.send(content);
}
//处理返回文本格式信息的函数
function processTextResponse(){
	if(http_request.readyState==4){
		if(http_request.status==200){
			alert("Text文档响应");
		}else{
			alert("您所请求的页面有异常。");
		}
	}
}
function processXMLResponse(){
	if(http_request.readyState==4){
		if(http_request.status==200){
			alert("XML文档响应");
		}else{
			alert("您所请求的页面有异常。");
		}
	}
}

 function mykeydown(){
   if(event.keyCode==116){
     window.event.keyCode=0;
     return false;
   }
  
 }
 
 document.onkeydown=mykeydown;
 
/*create Table*/
   function showTable(id1,id2,id3,id4,id5){
	   	$(id1).style.display="none";
		$(id2).style.display="block";
		$(id3).style.display="block";
		$(id4).style.display="block";
		
		
        if(id5!=null){
			$(id5).style.display="block";
			}
		
	}
      function showTable1(id1,id2,id3,id4,id5){
	    document.getElementById(id1).style.display = "none";
		document.getElementById(id2).style.display = "none";
		document.getElementById(id3).style.display = "block";
        document.getElementById(id4).style.display = "block";
        if(id5!=null){
			document.getElementById(id5).style.display = "block";
			}
		
	}
	function hideTable(id1,id2,id3,id4,id5){
	    document.getElementById(id1).style.display = "block";
		document.getElementById(id2).style.display = "none";
		document.getElementById(id3).style.display = "none";
        document.getElementById(id4).style.display = "none"; 	
		if(id5!=null){
			document.getElementById(id5).style.display = "none"; 
	 
	 		}
	 
		
	}
	function hideTable1(id1,id2,id3,id4,id5){
	    document.getElementById(id1).style.display = "block";
		document.getElementById(id2).style.display = "block";
		document.getElementById(id3).style.display = "none";
        document.getElementById(id4).style.display = "none"; 	
        	
	   	if(id5!=null){
			document.getElementById(id5).style.display = "none"; 
	 
	 		}
		
	}   
    
    
    	function hideTable2(id1,id2,id3,id4){
	    document.getElementById(id1).style.display = "block";
		document.getElementById(id2).style.display = "none";
		document.getElementById(id3).style.display = "none";
        document.getElementById(id4).style.display = "none"; 	
        	
	  
		
	}