驗證輸入字符個數和數字提示

function checkcount(filed,fieldcount,maxlength)
        {
            if(filed.value.length>maxlength)
            {
                filed.value=filed.value.substring(0,maxlength);
            }
            else
            {
                fieldcount.style.cssText="color:#ffffff;background-color:#3c66a6;font-size:9pt";
                //fieldcount.style.width=filed.value.length+"px";
                fieldcount.innerHTML="當前字限";
                fieldcount.innerHTML+=maxlength;
                fieldcount.innerHTML+="  已經輸入  [";
                fieldcount.innerHTML+="<font style='color:red'>"+filed.value.length+"</font>]";
                fieldcount.innerHTML+="&nbsp;&nbsp;還可以輸入&nbsp;&nbsp;";
                fieldcount.innerHTML+="[<font style='color:#BCF74E'>"+(maxlength-filed.value.length)+"</font>]";
                fieldcount.innerHTML+="&nbsp;&nbsp;個字符";
            }
        }
        function ShowToolTip(objValue)
        {

            var div=document.createElement("div");
            div.id="showTool";
            $("operate").appendChild(div);
            div.style.cssText="display:block;background-color:infobackground;font-size:9pt;color:#5d00e7;border:solid 1px indianred;overflow:visible;position:absolute;Z-INDEX:2001;filter: alpha(opacity=85);";
            div.innerHTML="提示信息:輸入數量请不要大于"+objValue+"!";
            x = event.clientX + document.body.scrollLeft;////获取鼠标位置
            y = event.clientY + document.body.scrollTop + 20;//#DF7417
            div.style.left=x;
            div.style.top=y;
        }
        function hiddentooltip()
        {
            var obj=$("operate").childNodes;
            for(var i=0;i<obj.length;i++)
            {
                if(obj[i].id=="showTool")
                {
                    $("operate").removeChild(obj[i]);
                }
            }
        }