function goSearch()
{
    var key=document.getElementById("searchTextbox").value;
    
    var currSelectValue = document.getElementById("select").options[document.getElementById("select").options.selectedIndex].value;
    
    if(key=="请输入搜索关键词")
    {
     alert('请输入搜索的关键字^_- ')
     return false;  
    }
    if(key=="")
    {
     alert('请输入搜索的关键字^_- ')
     return false;  
    }
    if(currSelectValue=="0")
    {
     alert('请选择搜索的类别^_-')
     return false; 
    }
     switch(currSelectValue)
    {  
         case "1"://供应信息
           window.location.href='/site/Price.aspx?s=1&kerwords='+escape(key);
           return false; 
         break;
         case "2"://求购信息
           window.location.href="/site/isell.aspx?s=2&kerwords="+escape(key);
         break;
         return false; 
         case "3"://公司信息
           window.location.href="/site/ibuy.aspx?s=3&kerwords="+escape(key);
         break;
         return false; 
         case "4"://展会信息
           window.location.href="/site/NewsList.aspx?s=4&kerwords="+escape(key);
         break;
         return false; 
         case "5"://资源信息
           window.location.href="/site/Company.aspx?s=5&kerwords="+escape(key);
         break;
         return false; 
           case "6"://资源信息
           window.location.href="/bbs/Default.aspx?s=5&kerwords="+escape(key);
         break;
         return false; 
         default:
           window.location.href="/site/Error.aspx";
         break;
       }  
     return false;
   
}

//可变窗口
function newwin(url,iw,ih)
{
	var il = (window.document.body.clientWidth - iw)/2;
	var it = (window.document.body.clientHeight - ih)/2;
	newWindow = window.open(url,"_blank","left="+il+",top="+it+",width="+iw+",height="+ih+",directories=no,status=no,scrollbars=yes,resizable=yes,menubar=no,location=no,menubar=no,toolbar=no");
}
//tab切换
function Show(id,mnue,content,Lenths,classname1,classname2)
{
  for(var i=1;i<=Lenths;i++)   
  { 
    if(parseInt(id)==i)
    {
  	  document.getElementById(content+i).style.display="";
  	  document.getElementById(mnue+i).className=classname1; 
  	}
  	else
  	{
  	  document.getElementById(content+i).style.display="none";
  	  document.getElementById(mnue+i).className=classname2; 

  	}   
  }
}

// JScript 文件
    var xmlHttp;
    function createXMLHttpRequest()
    {
        if(window.ActiveXObject)
        {
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        else if(window.XMLHttpRequest)
        {
            xmlHttp = new XMLHttpRequest();
        }
    }
    //处理方法
    function CheckUserName(user,pwd)
    {
        createXMLHttpRequest();
        var url= "http://"+window.location.host+"/ajax/UserIsPass.aspx?user="+user+"&pwd="+pwd+"";
        //alert(url);
        xmlHttp.open("GET",url,true);
        xmlHttp.onreadystatechange=ShowResult;
        xmlHttp.send(null);
        //document.getElementById("Msg").innerHTML='';
    }
    //回调方法
    function ShowResult()
    {
        if(xmlHttp.readyState==4) 
         {
            if(xmlHttp.status==200)
            {
               var msg=innerHTML=xmlHttp.responseText;
               if(msg=="1")
               {
                 UserLogin();
               }
               else
               {
                  alert(msg);
                  NoLogin();
               
               }
            }
        }
    }
    //登录
    function TryLogin()
    {
      var user=document.getElementById('user').value;
      var pwd=document.getElementById('pwd').value;
      if(user==""||pwd=="")
      {
        alert('请输入用户名或密码.');
        return;
      }
      else
      {
        //alert('登录成功!');
        document.getElementById("login").innerHTML="登录中,请稍候...<img src=\"/images/info_wait.gif\">";
        CheckUserName(user,pwd)
      }
      
    }
    //用户已经登录
    function UserLogin()
    {
         var html=getCookie("CnhmwUser")
         if(html!="")
         {
           document.getElementById("login").innerHTML=html;
         }
         else
         {
           NoLogin();
         }
    }
        //用户没有登录
    function NoLogin()
    {
          var html="用户名：<input id=\"user\" name=\"user\" type=\"text\" size=\"8\" class=\"ipt_flat\"/>";
          html+="&nbsp;密码：<input name=\"pwd\" type=\"password\" id=\"pwd\" size=\"8\" class=\"ipt_flat\"/>";
          html+="&nbsp;&nbsp;&nbsp;<input type=\"image\" name=\"imageField\" src=\"http://"+window.location.host+"/images/login_btn.gif\" class=\"img_botton\" align=\"absmiddle\" onclick=\"TryLogin();\"/>";
          html+="&nbsp;&nbsp;<input type=\"button\" name=\"RegBtn\" id=\"RegBtn\" class=\"input_3\" onclick=\"goReg();\"/>";
          document.getElementById("login").innerHTML=html;
    }
    //获取cookies
  function getCookie(name)
  {

        var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
        if(arr=document.cookie.match(reg))
        {         
          return unescape(unescape(arr[2]).split('sucess=')[1]);
        }
        else
        {
           return "";
        }	
        
  }
  function goReg()
  {
    window.location.href='http://'+window.location.host+'/Member/UserReg.aspx';
  }
  function Clear()
  {
   document.getElementById("searchTextbox").value='';
  }
    //用户已经登录
    function UserLoginCheck()
    {
       var s=getCookie("CnhmwUser");
       if(s=="")
       {
         alert("你还没有登录，请先在网页顶部登录");
         return false;
       }
       else
       {
         return true;
       }
      
    }