function serchCheckAll() {
            if (document.getElementById("serchA").value.trim() == "" || document.getElementById("serchA").value.trim() == "输入关键字")
             { 
             $("a").style.display="block"; $("showtxt").innerHTML="请输入关键字!";
            $("serchA").focus(); document.getElementById("serchA").value = ""; return false; 
//             alert("请输入关键字!"); $("serchA").focus(); document.getElementById("serchA").value = ""; return false; 
              }
            return true;
        }
        function clearinpT() {
            if (document.getElementById("serchA").value.trim() == "输入关键字") { document.getElementById("serchA").value = ""; }
        }
        function changeTag2(thisObj2) {
            if (thisObj2.getAttribute("focus") == "1") return;
            var objs2 = thisObj2.parentNode.parentNode.getElementsByTagName("img");
            for (var i = 0; i < objs2.length; i++) {
                if (objs2[i].getAttribute("default") == "1") continue;
                if (objs2[i] == thisObj2) { thisObj2.src = thisObj2.src.replace("_f.gif", "_b.gif"); thisObj2.setAttribute("focus", "1"); }
                else { objs2[i].src = objs2[i].src.replace("_b.gif", "_f.gif"); objs2[i].setAttribute("focus", "0"); }
            }
        }
         function sureclose()
        {
         document.getElementById("a").style.display="none";
        }