var xmlHttp = false;
try { xmlHttp = new ActiveXObject("MSXML2.XMLHTTP"); }
catch (e) {
    try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); }
    catch (e2) {
        try { xmlHttp = new XMLHttpRequest(); }
        catch (e3) { xmlHttp = false; }
    }
}
if (!xmlHttp) alert("Error initializing XMLHttpRequest!");

//报表
function but11_onclick() {
     document.getElementById("div11").style.display = 'block';
     document.getElementById("div12").style.display = 'block';
}