function $(oo){
 var oo=document.getElementById(oo)?document.getElementById(oo):'';
 return oo;
}
function runCode(code){
var _c=window.open("","","");
_c.opener=null;
_c.document.write(code);
_c.document.close();
}
function createXMLHttpRequest(){
  if(window.ActiveXObject){
      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  }else if(window.XMLHttpRequest) {
      xmlHttp = new XMLHttpRequest();
  }
} 
function startRequest(url,returnfun) {
   createXMLHttpRequest(); 
   xmlHttp.onreadystatechange =returnfun;
   xmlHttp.open("GET",url,true);
   xmlHttp.send(null);    

}






var tmptxt='';
function gositesearch(keyword){
	oldkeyword=keyword;
	if (tmptxt=='')
	{
		tmptxt=$("indexhtml").innerHTML;// 保存临时变量
	}
    ylmftime=new Date().getTime();
	url='sou.asp?key='+escape(keyword)+'&ylmftime='+ylmftime;
    $("indexhtml").innerHTML='<center></center>';
	startRequest(url,showsearchsite);
}
function showsearchsite(){
{
  if(xmlHttp.readyState == 4){
	  txt=xmlHttp.responseText;



	     $("indexhtml").innerHTML=txt;}}

	  
}
function showindexhtml(){
 if(tmptxt!=''){
   $("indexhtml").innerHTML=tmptxt;
 }
}
function JHshStrLen(sString)
{
var sStr,iCount,i,strTemp ; 
iCount = 0 ;
sStr = sString.split("");
for (i = 0 ; i < sStr.length ; i ++)
{
strTemp = escape(sStr[i]); 
if (strTemp.indexOf("%u",0) == -1) // 表示是汉字
{ 
iCount = iCount + 1 ;
} 
else 
{
iCount = iCount + 2 ;
}
}
return iCount ;
}
var oldkeyword='';
function KeyDown()
{
    if (event.keyCode == 13)
    {
        event.returnValue=false;
        event.cancel = true;
        if(JHshStrLen($('sitekeyword').value)<-5){
			alert('请输入要搜索的关键字或关键字不能少于2个字节!!');
		}else{
			if ($('sitekeyword').value!=oldkeyword)
			{
				gositesearch($('sitekeyword').value);
			}
			
		}
    }
}
function input(){
	
      if(JHshStrLen($('sitekeyword').value)<-1 ){//||JHshStrLen($('sitekeyword').value)<1
		 // showindexhtml();
      }else{
		  // $("indexhtml").innerHTML=JHshStrLen($('sitekeyword').value);
		  // 请求判断
		  // if (xmlHttp.readyState!=4)
		   //{
			 //  xmlHttp.abort();
		   //}
	       if ($('sitekeyword').value!=oldkeyword)
		  {
		    gositesearch($('sitekeyword').value);
		  }
			
	  }
}