function showProductByChar(obj,key)
{
    var bIt= document.getElementById("aProductCharAC");
    if(bIt!=null){bIt.className="";bIt.id="";}
    var con=document.getElementById("divProductCharB");
    con.style.display="block";
    obj.className="ProductCharAC";
    obj.id="aProductCharAC";
    obj.onmouseout=con.onmouseout=function(){obj.className="";con.style.display="none";}
    con.onmouseover=function(){obj.className="ProductCharAC";con.style.display="block";}
    //显示值    
    $.ajax({
        type: "GET",
        url: "/AjaxHandle/getProductChar.aspx",
        data: "tag="+key,
        contentType: "application/json; charset=utf-8",
        dataType: "html",
        success: function(msg) 
        {      
            $("#divProductCharB").html(msg);
        }
    }); 
}