var lastScript;
var h=document.getElementsByTagName("head")[0];

function loadScript(url){
	var f=document.createElement("script");
	var d=new Date().getTime();
	f.type="text/javascript";
	f.id=d;
	f.src=url+'&'+d;
	h.appendChild(f);
	if(lastScript&&g(lastScript))g(lastScript).parentNode.removeChild(g(lastScript));
	lastScript=d;
}
//创建一个DIV，ID为IdN
function greatDiv(IdN) {
  var str   = document.createElement("div");
  str.id    = IdN;
	with(str.style){
      position	= "absolute";
      left		= "0px";
      top		= "0px";
      width		= "200px";
      height	= "200px";
      zIndex	= "1";
      visibility= "hidden";
  }
  document.body.appendChild(str);
  document.getElementById(IdN).attachEvent("onmouseover",changeVisDiv);
  document.getElementById(IdN).attachEvent("onmouseout",hiddenDiv);
}

function loadDiv(url,obj){
	var f=document.createElement("script");
	var d=new Date().getTime();

	event.cancelBubble = true;
	event.returnValue = false;

	f.type="text/javascript";
	f.id=d;
	f.src=url+'&bb='+d;

	h.appendChild(f);

	//该坐标需要优化
	div123456.style.top  = document.body.scrollTop+event.clientY + 5 ;
	div123456.style.left = document.body.scrollLeft+event.clientX + 5 ;
	visDiv = true;
	DivVisible();
	if(lastScript&&g(lastScript))g(lastScript).parentNode.removeChild(g(lastScript));
	lastScript=d;
}
var i = 0;
var visDiv= true;

function hiddenDiv(obj){
	if(obj.style=="[object]"){
		obj.style.color="";
	}
	visDiv = true;
	setTimeout(DivHidden,1000);
}

//改变是否显示层的状态
function changeVisDiv(){
	visDiv = false;
	return;
}

//将层隐藏
function DivHidden(){
	if (visDiv){
		if (div123456.style.visibility=='visible'){
			div123456.style.visibility='hidden';
			visDiv = false;
		}
	}
}
//将层显示
function DivVisible(){
	if (visDiv){
		if (div123456.style.visibility=='hidden'){
			div123456.style.visibility='visible';
			visDiv = false;
		}
	}
}

function g(x){return document.getElementById(x)};
var KeyWords = [];

onload=function(){
	greatDiv("div123456");						//建立一个展现层
	var keyword=new keywords();
	keyword.body=document.body; // 要高亮显示关键词的 HTML 元素
	keyword.flag='';												 // 传递要匹配的关键词, 使用正则匹配.
	keyword.func=iLink; // 自定义链接函数, 可选, 参数为 yourfunc(sMatch, sBgCor, sFgCor);
	keyword.go(); 			// 执行本程序
	keyword=null;
 }

	function iLink(sMatch, sBgCor, sFgCor){
		for(var i = 0; i < KeyWords.length; i++){
    		if (KeyWords[i]==sMatch){
    			return '<span id="test" style= "text-align: left;line-height: 24px;	color: blue; text-decoration: underline;	border-bottom-width: 1px;	border-bottom-style: dotted;	border-bottom-color: #FF0000;" onmouseout="hiddenDiv(this)" onmouseover=loadDiv("http://dg.711688.net/CodeUTF8/showDiv.asp?thisName=' + sMatch + '&thisID='+ KeyWords[i+1] +'",this)>' + sMatch+'</span>';
    		}
    	}
    	return sMatch;
	}

 function keywords(){ // shawl.qiu code
  this.body=document.body;
  this.flag='';
  this.func='';
  this.iFlag1='@@';
  this.iFlag2='##';
  this.go=function(){
   fGetWord(tl.body);
  };

  var tl=this;
  var tlTemp='';
  var strKeyW='';
  var intCount=0;

  function fGetWord(oEle){
	for(var i=0, j=oEle.childNodes.length; i<j; i++){
	    var oTemp=oEle.childNodes[i];

	    if(oTemp.nodeType==1){
			arguments.callee(oTemp);
	    }else if (oTemp.nodeType==3){
	     	var oRe=new RegExp(tl.flag,'gi');
	        if(oRe.test(oTemp.data)){
		      	var sTemp=oTemp.data;
		      	if(tl.func==''||oTemp.parentNode.nodeName=='A'||oTemp.parentNode.innerText.length<46){
		      		}else{
		      		intCount=0;
			       	sTemp=sTemp.replace(oRe,function(sMatch){
				        if(tlTemp.indexOf(tl.iFlag1+sMatch+tl.iFlag1+tl.iFlag2)==-1){

					         var sBgCor='';
					         var sFgCor='';
					         tlTemp+=tl.iFlag1+sMatch+tl.iFlag1+tl.iFlag2+sBgCor+tl.iFlag2+sFgCor;
					         return fReturnStr(oTemp, sMatch, sBgCor, sFgCor);
				        } else {

							var sBgCor=sFgCor='';
							var iRe=new RegExp(tl.iFlag1+'('+sMatch+')'+tl.iFlag1+tl.iFlag2+'(.*?)'+
							tl.iFlag2+'(.*?)('+tl.iFlag1+'|'+tl.iFlag2+'|$)','i');

							tlTemp.replace(iRe, function($0,$1,$2,$3){
								sBgCor=$2;sFgCor=$3;
							});
							return fReturnStr(oTemp, sMatch, sBgCor, sFgCor);
				        }// end if 3
			       	});

			      	if(typeof sTemp!='undefined'){
				       	if(sTemp=='')break;
				       	var oSpan=document.createElement('span');
				        oSpan.innerHTML=sTemp;
				        oTemp.parentNode.replaceChild(oSpan, oTemp);
				        oSpan=null;
			      	} // end if 3
			    } // end if 2
		    }
	      	oRe=null;
	    } // end if 1
	} // end for
  } // end function fGetWord(oEle)

	function left(mainStr,lngLen) {
		if (lngLen>0) {
			return mainStr.substring(0,lngLen)
		}
		else{
			return null
		}
	}

	function right(mainStr,lngLen) {
		if (mainStr.length-lngLen>=0 && mainStr.length>=0 && mainStr.length-lngLen<=mainStr.length) {
			return mainStr.substring(mainStr.length-lngLen,mainStr.length)
		}
		else{
			return null
		}
	}

  function fReturnStr(oNode, sMatch, sBgCor, sFgCor){
    if((tl.func==''||oNode.parentNode.nodeName=='A'||oNode.parentNode.innerText.length<40)||(strKeyW.indexOf(sMatch)!=-1)||intCount>=2){
     return sMatch;
    } else {
	 strKeyW = strKeyW + '|' + sMatch;
	 intCount = intCount + 1;
	//*********************************
     var strKeyWord=tl.flag;
     strKeyWord ='|'+strKeyWord+'|';
     strKeyWord=strKeyWord.replace('|'+sMatch+'|','|');

     strKeyWord=strKeyWord.replace('||','|');

     if (left(strKeyWord,1)=='|'){
     	strKeyWord=right(strKeyWord,(strKeyWord.length-1));
     }

     if (right(strKeyWord,1)=='|'){
     	tl.flag=left(strKeyWord,(strKeyWord.length-1));
     }else{
     	tl.flag=strKeyWord;
     }
	//*********************************


     return tl.func(sMatch, sBgCor, sFgCor);
    }
  } // end function fReturnStr(oNode, sMatch, sBgCor, sFgCor)

// function fRndCor(under, over){
//   if(arguments.length==1){
//    var over=under;
//     under=0;
//   }else if(arguments.length==0){
//    var under=0;
//    var over=255;
//   }
//   var r=fRandomBy(under, over).toString(16);
//    r=fStrPadStr(r, r, 2);
//   var g=fRandomBy(under, over).toString(16);
//    g=fStrPadStr(g, g, 2);
//   var b=fRandomBy(under, over).toString(16);
//    b=fStrPadStr(b, b, 2);
//    //defaultStatus=r+' '+g+' '+b
//   return '#'+(r+g+b).toUpperCase()+';';
//  } // shawl.qiu code
  function fRandomBy(under, over){
    switch(arguments.length){
    case 1: return parseInt(Math.random()*under+1);
    case 2: return parseInt(Math.random()*(over-under+1) + under);
    default: return 0;
   }
  }  // shawl.qiu code
  function fStrPadStr(sSrc, sPad, nLen){
   if(!sSrc)return false;
   if(!sPad)sPad='0';
   if(!nLen)nLen=2;
   sSrc+='';
   if(sSrc.length>=nLen)return sSrc;
   sPad=new Array(nLen+1).join(sPad);
   var re=new RegExp('.*(.{'+(nLen)+'})$');
   return (sPad+sSrc).replace(re,'$1');
  }
 }