function menuFix() {
 var sfEls = document.getElementById("nav").getElementsByTagName("li");
 for (var i=0; i<sfEls.length; i++) {
  sfEls[i].onmouseover=function() {
  this.className+=(this.className.length>0? " ": "") + "sfhover";
  }
  sfEls[i].onMouseDown=function() {
  this.className+=(this.className.length>0? " ": "") + "sfhover";
  }
  sfEls[i].onMouseUp=function() {
  this.className+=(this.className.length>0? " ": "") + "sfhover";
  }
  sfEls[i].onmouseout=function() {
  this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), 

"");
  }
 }
}

var _moveSpeed = 50; 
var _movestep = 1;   
var _post = 0;       
var _height = 0;  
var _start = true;   

function item_move(v) 
{
  if(v) 
  {  
      document.getElementById("box").innerHTML +=document.getElementById("box").innerHTML; 
      _height = document.getElementById("box").offsetHeight; 
  }
  if(_start) 
  {  
    _post -= _movestep; 
    if(_post + _height <  document.getElementById("boxparent").offsetHeight)  
      _post += _height/2; 
    document.getElementById("box").style.top = _post + "px";
  }
  setTimeout('item_move()',_moveSpeed); 
}
function login_click()
{
   var url = "Ajax/Login.aspx";
   var pars = Array();
   pars["Action"] = "login";
   pars["username"] = $("xname").value;
   pars["password"] = $("xpass").value;
   pars["random"]=Math.random();
   xmlHttp.sendAJAX(url,pars,"post",onComplete,true);
   function onComplete(str) 
   { 
      if(str.length<10)

       alert("密码错误！");
       
      else
      $("ajax_login").innerHTML=str;

       
   }
}
function login_key(evt)
{
   evt = evt ? evt : (window.event ? window.event : null); 
   if (evt.keyCode==13 || evt.keyCode==13)
     login_click();
   else
   return;
}
function cancle_click()
{
   var url = "Ajax/Login.aspx";
   var pars = Array();
   pars["Action"] = "cancle";
   pars["random"]=Math.random();
   xmlHttp.sendAJAX(url,pars,"post",onComplete,true);
   function onComplete(str) 
   { 
         $("ajax_login").innerHTML=str; 
   }
}
function changepage(id,btnclick)
{
   var url = "Ajax/Category.aspx";
   var pars = Array();
   pars["Action"] = btnclick;
   pars["Id"] = id;
   pars["random"]=Math.random();
   xmlHttp.sendAJAX(url,pars,"get",onComplete,true);
   function onComplete(str) 
   { 
         $("ajax_category").innerHTML=str; 
   }
}
function changepagex(id,btnclick)
{
   var url = "Ajax/ArticleType.aspx";
   var pars = Array();
   pars["Action"] = btnclick;
   pars["Id"] = id;
   pars["random"]=Math.random();
   xmlHttp.sendAJAX(url,pars,"get",onComplete,true);
   function onComplete(str) 
   { 
         $("ajax_category").innerHTML=str; 
   }
}
function changepageb(btnclick)
{
   var url = "Ajax/InfoSearch.aspx";
   var pars = Array();
   pars["Action"] = btnclick;
   pars["random"]=Math.random();
   xmlHttp.sendAJAX(url,pars,"get",onComplete,true);
   function onComplete(str) 
   { 
         $("ajax_category").innerHTML=str; 
   }
}
function searchpage(btnclick)
{
   var url = "Ajax/Search.aspx";
   var pars = Array();
   pars["Action"] = btnclick;
   pars["random"]=Math.random();
   xmlHttp.sendAJAX(url,pars,"get",onComplete,true);
   function onComplete(str) 
   { 
         $("ajax_category").innerHTML=str; 
   }
}
function report_click()
{
   if($("xcontent").value.length>5)
   {
       var url = "Ajax/Report.aspx";
       var pars = Array();
       pars["CategoryId"] =$("xtype").value;
       pars["Content"] =$("xcontent").value;
       pars["FullName"] = $("xname").value;
       pars["Phone"] = $("xphone").value;
       pars["Email"] = $("xemail").value;
       pars["QQ"] = $("xqq").value;
       pars["random"]=Math.random();
       xmlHttp.sendAJAX(url,pars,"post",onComplete,true);
       function onComplete(str) 
       { 
             $("message").innerHTML=str; 
       }
   }
   else
   $("message").innerHTML="正文的长度必须大于10个字符"; 
}
function searcha_click()
{
    var input = $("keywords").value;
    var ca = $("sec1").value;
    var cr = $("sec2").value;
    var hr = $("planthost").value;
    location.href='InfoSearch.aspx?keyword='+input+'&Crimes='+ cr +'&Category='+ca + '&Host='+hr;
}
function search_click()
{
    var input = $("keyword").value;
    location.href='Search.aspx?keyword='+input;
}
function showmap()
{
$("mapa").className="maphover";
$("mapa").onmouseover = function()
{
    $("img2").style.display="none";
    $("img1").style.display="block";
    if($("mapb").className=="maphover")
    {
       this.className="maphover";
       $("mapb").className="";
    }
}

$("mapb").onmouseover = function()
{
    $("img2").style.display="block";
    $("img1").style.display="none";
    if($("mapa").className=="maphover")
    {
        this.className="maphover";
        $("mapa").className="";
    }
}
}