String.prototype.trim = function()
{
     return this.replace(new RegExp("(^[\\s]*)|([\\s]*$)", "g"), "");
};

//显示下拉信息
function ShowSuggest(objInputText)
{
     //为控制回车事件临时做的一个小判断
     //var boolCheck = 'in';
     objInputText.onkeyup = ControlSuggest;
     
     objInputText.onblur = RemoveSuggest;
       
     
     var oldValue = objInputText.parentElement.getElementsByTagName("h6")[0];
     
     //对提示框的控制
     function ControlSuggest()
     {
         var ie = (document.all)?true:false;
         if(ie)
         {
            var keycode = event.keyCode;
            var txtvalues = objInputText.value.trim().split(";");
            
            if( !CheckSuggest() && txtvalues[txtvalues.length-1] != oldValue.innerText.trim())
            {
                CreateSuggest();
                return ;
            }
            
            if(keycode == 32 && txtvalues[txtvalues.length-1] != oldValue.innerText.trim())
            {
                CreateSuggest();
                return ;
            }
            
            //按向下创建提示
            if(!CheckSuggest() && txtvalues[txtvalues.length-1].length !=0 && keycode == 40)
            {//文本框有内容,提示不存在,向下
                CreateSuggest();
                return;
            }
            
           //当删除的时候，参量要初始化
            if(keycode == 8 && txtvalues[txtvalues.length-1].length == 0)
            {
                DeleteSuggest();
                oldValue.innerText = "";
                return ;
            }
            
            if(CheckSuggest())
            {
                var inputIndex = document.getElementById("inputIndex");
                var selectIndex = Number(inputIndex.value);
                //alert('aaa');
                //排除上下控制的值操作外，其他任何值改变都要去创建提示框
                if( selectIndex < 0 && txtvalues[txtvalues.length-1] != oldValue.innerText)
                {
                    CreateSuggest();                   
                    return ;
                }
                
                if(keycode == 40)
                {//向下
                    //boolCheck = 'out';
                    ChangeSelection(false);
                    return ;
                }
                
               if(keycode == 38)
                {//向上
                    //boolCheck = 'out';
                    ChangeSelection(true);
                    return ;
                }
                
                if(keycode == 46 || keycode == 27)
                {//del
                    //boolCheck = 'out';
                    DeleteSuggest();
                    oldValue.innerText = "";
                    return ;
                }
                
                var panelSuggest = document.getElementById("divSuggestPanel");
                var tb = panelSuggest.getElementsByTagName("table")[0];
                //alert(keycode);
                if(keycode == 13)
                {//回车
                    if(selectIndex > -1 && txtvalues[txtvalues.length-1] != oldValue.innerText)
                    {
                        CreateSuggest();
                        return ;
                    }
                   
                    RemoveSuggest();
                    document.getElementById('aSearch').click();
                    return ;
                }
                
            }
            
            if(txtvalues[txtvalues.length-1] != oldValue.innerText)
            {//当上面的条件都筛选后，只要值发生改变就创建下拉提示
                CreateSuggest();
                return ;
            }
        }
        
    }
    
    //删除提示前对文本做相关操作
    function RemoveSuggest()
    {
        if(CheckSuggest())
        {
            var panelSuggest = document.getElementById("divSuggestPanel");
            var inputIndex = document.getElementById("inputIndex");
            
            var txtvalues = objInputText.value.trim().split(";");
            
            if( CheckActiveElement(panelSuggest) || event.keyCode == 13)
            {
                //做个判断，判断当前活动对象 是不是TD,是的话就执行下面的操作，不是的话就不做操作，或者把文本框作为当前活动
                if(CheckActiveElement(panelSuggest) && document.activeElement.tagName != "TD")
                {
                    objInputText.focus();
                    return ;
                }
                
                //得到选定的值
                var selectIndex = Number(inputIndex.value);
                if(selectIndex >= 0)
                {
                    var tb = panelSuggest.getElementsByTagName("table")[0];
                    txtvalues[txtvalues.length-1] = tb.rows[selectIndex].cells[0].innerText;
                    objInputText.value = GetValues(txtvalues);
                }
            }
            
            document.body.removeChild(inputIndex);
            document.body.removeChild(panelSuggest);
            oldValue.innerText = "";
        }
        else
        {
            return ;
        }
    }
    
    //删除提示的方法，不对文本做任何操作
    function DeleteSuggest()
    {
        if(CheckSuggest())
        {
            var panelSuggest = document.getElementById("divSuggestPanel");
            var inputIndex = document.getElementById("inputIndex");
            document.body.removeChild(inputIndex);
            document.body.removeChild(panelSuggest);
        }
    }
    
    //加载提示框
    function CreateSuggest()
    {
        var txtvalues = objInputText.value.trim().split(";");
        
        //提示框存在，而且文本框值与上次的输入不同时，才进行下面的加载工作
        if(CheckSuggest())
        {
            if( oldValue.innerText.trim() == txtvalues[txtvalues.length-1].trim())
            {
                return ;
            }
            else
            {
                DeleteSuggest();
            }
        }
        
        if(CheckSuggest() && txtvalues[txtvalues.length-1].trim().length ==0)
        {//提示框存在,但是文本框没有内容,这时删除提示框
            DeleteSuggest();
            oldValue.innerText = "";
            return ;
        }
        
        //如果输入为空格，就退出
        if(txtvalues[txtvalues.length-1].trim().length == 0)
        {
            return ;
        } 
        
        //从数据源中取数据
        var suggestList = GetSuggestList();
        
        if(suggestList == null||suggestList.length < 1)
        {//对传入的数组进行判断，为空或者列表为0就退出
            DeleteSuggest();                                  //开始的输入有提示，后面的输入可能没有提示，所以数据源为空时要尝试删除提示
            oldValue.innerText = "";
            return ;
        }
        
        oldValue.innerText = txtvalues[txtvalues.length-1];              //以上条件都符合，根据数据源来创建数据
        
        var inputIndex = document.createElement("input");     //用隐藏控件来做索引的保存
        inputIndex.type = "hidden";
        inputIndex.id = "inputIndex";
        inputIndex.value = -1;
        
        var suggest = "";                                     //根据数据源来写div提示信息
        suggest += "<table>";
        for(var nIndex = 0; nIndex < suggestList.length; nIndex++)
        {
            suggest += "<tr onmouseover=\" for(var n=0;n<this.parentElement.rows.length;n++){this.parentElement.rows[n].className='trmouseout';};this.className='trmouseover';var inputIndex = document.getElementById('inputIndex');inputIndex.value = this.rowIndex; \" onmouseout=\"this.className='trmouseout';\"  >";
            suggest += suggestList[nIndex];
            suggest += "</tr>";
        }
        suggest += "</table>";
        
        var panelSuggest = document.createElement("div");                //创建装提示框的容器div
        
        panelSuggest.id = "divSuggestPanel";
        panelSuggest.className = "pnlSuggest";                           //设置对象的类
        panelSuggest.style.width = objInputText.clientWidth + "px";      //设置对象的宽度，与文本框宽度相同
        panelSuggest.style.top = (GetPosition()[0] + objInputText.offsetHeight + 1) + "px";
        panelSuggest.style.left = GetPosition()[1] + "px";
        panelSuggest.innerHTML = suggest;
        
        //alert(suggest); 这里绘制好表格了
               
        document.body.appendChild(panelSuggest);                         //把提示框和索引控件添加进来        
        document.body.appendChild(inputIndex);
        
        //判断显示条数的多少,多于10条就用滚动条操作
        if(suggestList.length > 10)
        {
            var h = panelSuggest.getElementsByTagName("tr")[1].offsetHeight;
            panelSuggest.style.height = (h * 10) + "px";
            panelSuggest.style.width = (objInputText.clientWidth + 20) + "px";
        }
        
    }
    
    //更换选项
    function ChangeSelection(isup)
    {

        if(CheckSuggest())
        {
            var txtvalues = objInputText.value.trim().split(";");
            
            var inputIndex = document.getElementById("inputIndex");                 //得到索引的值
            var selectIndex = Number(inputIndex.value);
            
            var panelSuggest = document.getElementById("divSuggestPanel");          //得到提示框
            var tb = panelSuggest.getElementsByTagName("table")[0]; 
            var maxIndex = tb.rows.length - 1;                                      //提示信息的最大索引
            
            if(isup)
            {//向上
                if(selectIndex >= 0)                                                //索引不能为负
                {
                    tb.rows[selectIndex].className = "trmouseout";
                    selectIndex--;
                    if(selectIndex >= 0)
                    {
                        tb.rows[selectIndex].className = "trmouseover";
                    }
                }
            }
            else
            {
                if(selectIndex < maxIndex)                                          //大于等于最大索引就不做任何操作
                {
                    if(selectIndex >= 0)
                    {
                        tb.rows[selectIndex].className = "trmouseout";
                    }
                    selectIndex++;
                    tb.rows[selectIndex].className = "trmouseover";
                }
            }
            
            inputIndex.value = selectIndex;
            //控制滚动条的上下
            if(selectIndex >= 0)
            {
                if(tb.rows[selectIndex].offsetTop < panelSuggest.scrollTop)
                {
                    panelSuggest.scrollTop = tb.rows[selectIndex].offsetTop;
                }
                if(tb.rows[selectIndex].offsetTop + tb.rows[selectIndex].offsetHeight > panelSuggest.scrollTop + panelSuggest.offsetHeight)
                {
                    panelSuggest.scrollTop = tb.rows[selectIndex].offsetTop + tb.rows[selectIndex].offsetHeight - panelSuggest.offsetHeight;
                }
            }
            
        }
        
    }
    
    //判断活动对象是否为obj对象的从属对象
    function CheckActiveElement(obj)
    {
        var isAe = false;
        var objtemp = document.activeElement;
        while(objtemp != null)
        {
            if(objtemp == obj)
            {
                isAe = true;
                break;
            }
            objtemp = objtemp.parentElement;
        }
        return isAe;
    }
    
    //检查提示框是否存在
    function CheckSuggest()
    {
        var panelSuggest = document.getElementById("divSuggestPanel");
        if(panelSuggest == null)
        {
            return false;
        }
        else
        {
            return true;
        }
    }
    
    //获取文本框的位置
    function GetPosition()
    {
        var top = 0,left = 0;
        var obj = objInputText;
        do 
        {
            top += obj.offsetTop;         //距离顶部
            left += obj.offsetLeft;       //距离左边
        }
        while (obj = obj.offsetParent);
        
        var arr = new Array();
        arr[0] = top;
        arr[1] = left;
        return arr; 
    }
    
    //得到提示数据
    function GetSuggestList()
    {
        var txtvalues = objInputText.value.trim().split(";");
        var txtfield = txtvalues[txtvalues.length-1];
        var hiddenvaluefield = objInputText.parentElement.getElementsByTagName("h2")[0].innerText;
        var showtextfield = objInputText.parentElement.getElementsByTagName("h3")[0].innerText;
        var procedurename = objInputText.parentElement.getElementsByTagName("h4")[0].innerText;
        var condition = objInputText.parentElement.getElementsByTagName("h5")[0].innerText;
        //设置条件判断suggest 是哪个范围的提示
        var rid = document.getElementById("indexSearch1_HiddenFieldID").value
        /////////这里进入后台设置
        //alert(txtfield+'|'+showtextfield+'|'+procedurename+'|'+condition);
        var suggestlist = Controls_Index_indexSearch.GetSuggestData(txtfield,showtextfield,procedurename,condition,rid).value;
        return suggestlist;
    }
    
    //得到文本框的显示值
    function GetValues(values)
    {
        var txtvalue="";
        for(var n=0;n<values.length;n++)
        {
            if(values[n].trim().length==0)
            {
                continue;
            }
            txtvalue+=values[n]+"";
        }
        return txtvalue;
    }
    var keycodeSearch = event.keyCode;
    //alert(boolCheck);
    
//    if(keycodeSearch == 13 && boolCheck == 'out')
//    {
//     document.getElementById('aSearch').click();
//    }
}