var SB_menuItemArray = new Array();
var SB_menuItemSelectIndex = -1;
var SB_isMenuShow = false;
var SB_m_pageSize = 10;
var SB_m_page = 1;
var sg_cache = new Object();

var SB_objInput = null;
var SB_ctrlObj = null;
var SB_ctrlMenuID = null;
var SB_timeDelay = 1000;
var SB_lastRequestTime=new Date().getTime() - SB_timeDelay;
var SB_doneSign=true;

var SB_G_ctrlObj = null;
var SB_G_ctrlMenuID = null;

function SB_canDoSign(){	
	var lastRequestTime_tmp = new Date().getTime();
	//1秒
	if(lastRequestTime_tmp - SB_lastRequestTime > SB_timeDelay){
		return true;
	}else{
		return false;
	}
}

function SB_doTime_OnKeyUp(){
	if(SB_ctrlObj != null && SB_ctrlMenuID != null && SB_doneSign){
		var ctrlObj = SB_ctrlObj;
		ctrlMenuID = SB_ctrlMenuID;
		SB_ctrlObj	= null;
		SB_ctrlMenuID = null;	
		SB_LoadMenuItemArray(ctrlObj, ctrlMenuID, true);
	}
}

function SB_ShowMenu(ctrlObj, ctrlMenuID, show){
	SB_objInput = ctrlObj;
	var menu = document.getElementById(ctrlMenuID);
	var ifrm = document.getElementById(ctrlMenuID + "_IFRAME");
	if(show){
		var btn = ctrlObj;
		if(btn){			
			var x = btn.offsetLeft;
			var y = btn.offsetTop;
			while(btn = btn.offsetParent){
				x += btn.offsetLeft;
				y += btn.offsetTop;
			}
			menu.style.left = x;
			menu.style.top = y + 22;
		}
		menu.style.display = "block";
		SB_isMenuShow = true;
		
		var objCtrlRange = ctrlObj.getClientRects();
		var objRange = menu.getClientRects();
		var widthX = objCtrlRange[0] .right - objCtrlRange[0] .left;
		var heightX = objRange[0] .bottom - objRange[0] .top;
		
		menu.style.width = widthX;
		ifrm.style.width = widthX;
		ifrm.style.height = heightX;
		ifrm.style.top = menu.style.top;
		ifrm.style.left = menu.style.left;
		ifrm.style.display = "block";		
		
	    try{
	    	if(ctrlObj.showTracelog && ctrlObj.showTracelog.length>0){
	    		aliclick(document, "?tracelog=" + ctrlObj.showTracelog);
	    	}
	    }catch(e) {}
	}else{
		menu.style.display = "none";		
		ifrm.style.display = "none";
		SB_isMenuShow = false;
		SB_lastRequestTime -= SB_timeDelay;
	}
}

function SB_OnDropDown(ctrlObj, ctrlMenuID){
	SB_LoadMenuItemArray(ctrlObj, ctrlMenuID);
	ctrlObj.focus();
}

function SB_OnBlur(ctrlObj, ctrlMenuID, event){
	SB_ShowMenu(ctrlObj, ctrlMenuID, false);
	SB_doneSign = false;
}

function SB_OnKeyDown(ctrlObj, ctrlMenuID, event){
	// 13: ENTER
	if((!SB_isMenuShow || SB_menuItemSelectIndex == -1) && event.keyCode == 13){
		return true;
	}
	if(event.keyCode == 13 || event.keyCode == 24){
		return false;
	}else{
		return true;
	}
}

function SB_OnKeyUp(ctrlObj, ctrlMenuID, event){
	var returnValue = false;
	switch(event.keyCode){
		case 38: // UP
			SB_SetMenuItemSelectIndex("OFFSET", -1);
			SB_RebuildMenuSelection(ctrlObj, ctrlMenuID);
			break;
			
			
		case 40: // DOWN
			SB_SetMenuItemSelectIndex("OFFSET", 1);
			SB_RebuildMenuSelection(ctrlObj, ctrlMenuID);
			break;
			
			
		case 13: // ENTER
			SB_SelectMenuItem(ctrlObj, ctrlMenuID);
            if(!SB_isMenuShow || SB_menuItemSelectIndex == -1){
            	returnValue = true;
            }
			break;
			
		case 24: // ESC
			SB_ShowMenu(ctrlObj, ctrlMenuID, false);
			break;
			
		default:
			SB_doneSign = true;
			SB_LoadMenuItemArray(ctrlObj, ctrlMenuID);
			returnValue = true;
			break;
	}
	return returnValue;
}

function SB_SelectMenuItem(ctrlObj, ctrlMenuID){
	var text = "";
	var menu = document.getElementById(ctrlMenuID);
	var menuItemList = menu.childNodes;
	for(var i=0; i< menuItemList.length; i++){
		if(i == SB_menuItemSelectIndex){
			text = menuItemList[i].innerHTML;
			break;
		}
	}
	
	if(text != "")
	{
		text = text.split("&nbsp;&nbsp;&nbsp;&nbsp;")[0];
		ctrlObj.value = text;
	} 
	try{
	    if(ctrlObj.selectTracelog && ctrlObj.selectTracelog.length>0){
	    	aliclick(document, "?tracelog=" + ctrlObj.selectTracelog);
	    }
    }catch(e) {}
	SB_ShowMenu(SB_objInput, ctrlMenuID, false);
	return false;
}

function SB_SetMenuItemSelectIndex(action, index){
	if(action == "SET")
		SB_menuItemSelectIndex = index;
	if(action == "OFFSET") 
		SB_menuItemSelectIndex += index;
		
	if(SB_menuItemSelectIndex < 0) SB_menuItemSelectIndex = SB_menuItemArray.length -1;
	if(SB_menuItemArray == null || SB_menuItemSelectIndex >= SB_menuItemArray.length) SB_menuItemSelectIndex = 0;
}

function SB_RebuildMenu(ctrlObj, ctrlMenuID){
	var html = "";
	var start = 0;
	if(SB_m_page <= 0) SB_m_page = 1;
	var maxPage = parseInt((SB_menuItemArray.length + SB_m_pageSize - 1)/SB_m_pageSize);
	if(SB_m_page > maxPage) SB_m_page = maxPage;
	start = (SB_m_page - 1)* SB_m_pageSize;
	for(var i= start; i<SB_menuItemArray.length && i < start + SB_m_pageSize; i++){
		html += "<div";
		html += " onmousedown=\"SB_SelectMenuItem(SB_objInput,'" + ctrlMenuID + "');\"";
		html += " onMouseOver=\"SB_SetMenuItemSelectIndex('SET', " + i + "); SB_RebuildMenuSelection(this,'" + ctrlMenuID + "');\"";
		html += " onBlur=\"return SB_ShowMenu(SB_objInput,'" + ctrlMenuID + "', true);\"";
		html += ">";
		html += SB_menuItemArray[i];
		html += "</div>";
	}
	if(ctrlObj.isNewIntro && ctrlObj.isNewIntro=="true")html += "<div align=\"center\" style=\"margin-top:5px;color:#666;BACKGROUND-COLOR: #D1EE8C;border-top:1px solid #89CE3A;height:18px;font-size:12px;padding-top:2px;cursor:default\">中洁网提示：请选择更准确的关键词</div>";

	document.getElementById(ctrlMenuID).innerHTML = html;
	
	SB_menuItemSelectIndex = -1;
}

function SB_RebuildMenuSelection(ctrlObj, ctrlMenuID){
	var menu = document.getElementById(ctrlMenuID);
	var menuItemList = menu.childNodes;
	for(var i=0; i< menuItemList.length; i++){
		if(i == SB_menuItemSelectIndex){
			menuItemList[i].className = "MB_MenuSelectedItem";
		}else{
			menuItemList[i].className = "";
		}
	}
}

function SB_LoadMenuItemArray(ctrlObj, ctrlMenuID, timeDelay){
	
	var v=ctrlObj.value;
    if(v ==""){
        SB_ShowMenu(ctrlObj, ctrlMenuID, false);
        return;
    }
  	if( v.length < 2 || v.length >5){  		
         SB_ShowMenu(ctrlObj, ctrlMenuID, false);
         return;
  	}
	if(!SB_canDoSign() || !SB_doneSign){
		if(!timeDelay){
			SB_ctrlObj = ctrlObj;
			SB_ctrlMenuID = ctrlMenuID;
			setTimeout("SB_doTime_OnKeyUp()", SB_timeDelay);
		}
		return;
	}
	SB_doneSign = false;
	
  	var s ="";
  	if(typeof( sg_cache[v]) != 'undefined'){
     	s = unescape(sg_cache[v]);
  	}
  	
    SB_menuItemArray = s.split(",");
  	if(typeof SB_menuItemArray =="undefined" || s == ""){
     	SB_menuItemArray = null;
     	SB_LoadIt(ctrlObj, ctrlMenuID,v);
  	}else if(SB_menuItemArray && SB_menuItemArray.length > 0){
        showMenuNeeded = true;
        SB_RebuildMenu(ctrlObj, ctrlMenuID);
        SB_ShowMenu(ctrlObj, ctrlMenuID, true);
        SB_doneSign = true;
    }
    
    SB_lastRequestTime=new Date().getTime(); 
}
function SB_LoadIt2(ctrlObj, ctrlMenuID,v){
	var httpRequest = SB_GetHttpRequest();
	httpRequest.onreadystatechange = function()
	{
		if(httpRequest.readyState == 1)// 开始加载
		{
			//html = "数据载入中...";
		}
		
		if(httpRequest.readyState == 4)	// 调用完毕
		{			
			if(httpRequest.status == 200) // 加载成功
			{
		
				var showMenuNeeded = false;
				var txt = unescape(httpRequest.responseText);
				try{
					if(txt != null && txt.length >0){
	       	          	var jo = eval('(' + txt + ')');
					  	SB_menuItemArray = jo.words;
					  	if(SB_menuItemArray && SB_menuItemArray.length > 0){
							showMenuNeeded = true;
                            sg_cache[v] = escape(SB_menuItemArray.join());
					  	}
					}
				}catch(e){}
				if(showMenuNeeded){
					SB_RebuildMenu(ctrlObj, ctrlMenuID);
					SB_ShowMenu(ctrlObj, ctrlMenuID, true);
				}
				else{
					SB_ShowMenu(ctrlObj, ctrlMenuID, false);
				}
			}
			SB_doneSign = true;
			SB_lastRequestTime=new Date().getTime();
		}
	}
  	var  url="/Search/GetKeyWord.aspx?keywords=" + (v);
	httpRequest.open("get", url, true);
  	httpRequest.send(null);
}

function SB_LoadIt(ctrlObj, ctrlMenuID, v){
	if(ctrlObj == null || ctrlMenuID == null){
		return;
	}	
	SB_loadContent(ctrlObj, ctrlMenuID, v);
}

function SB_loadContent(ctrlObj, ctrlMenuID, keyword){
	SB_G_ctrlObj = ctrlObj;
	SB_G_ctrlMenuID = ctrlMenuID;
	var str='/Search/GetKeyWord.aspx?keywords=' + keyword;
	var s=document.createElement('SCRIPT');
	s.src=str;
	document.body.appendChild(s);	
}

function SB_callBack(){
	if(SB_G_ctrlObj == null || SB_G_ctrlMenuID == null){
		return;
	}	
	SB_onLoadCompleted();
}

function SB_onLoadCompleted(){
	var showMenuNeeded = false;
	try{
		if(SB_words != null && SB_words.length >0){
		  	SB_menuItemArray = SB_words;
		  	if(SB_menuItemArray && SB_menuItemArray.length > 0){
				showMenuNeeded = true;
                sg_cache[SB_keyword] = escape(SB_menuItemArray.join());
		  	}
		}
	}catch(e){}
	if(showMenuNeeded){
		SB_RebuildMenu(SB_G_ctrlObj, SB_G_ctrlMenuID);
		SB_ShowMenu(SB_G_ctrlObj, SB_G_ctrlMenuID, true);
	}
	else{
		SB_ShowMenu(SB_G_ctrlObj, SB_G_ctrlMenuID, false);
	}
	SB_doneSign = true;
	SB_lastRequestTime=new Date().getTime();
}

function SB_GetHttpRequest(){
	var httpRequest;
	
	if (window.XMLHttpRequest){ // Mozilla, Safari,...
		httpRequest = new XMLHttpRequest();

		if (httpRequest.overrideMimeType){
			httpRequest.overrideMimeType('text/xml');
		}
	}
	else if (window.ActiveXObject){ // IE
		try{
			httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
			
		}
		catch(e){
			try {
				httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
				
			} 
			catch(e){}
		}
	}
	
	return httpRequest;
}