upTodown

     ------->>> 

从左图变为有图，并实现将左图上面的信息隐藏。

<img src="../images/up.gif" border="0" onclick="javascript:DisShowDataMain(this);" id="img4" />

function DisShowDataMain(imgObj) {
            var obj2 = document.getElementById("queryMain");
            if (obj2.style.display == "none") {
                obj2.style.display = "block";
                imgObj.src = "../images/up.gif";

            }
            else {
                obj2.style.display = "none";
                imgObj.src = "../images/down.gif";

            }
        }