// JScript 文件

var myAlert = document.getElementById("alertsignin");
/* var reg = document.getElementById("signincontent").getElementsByTagName("a")[0]; */
var mClose = document.getElementById("closesignin");
/*
reg.onclick = function() */
function show() {
    myAlert.style.display = "block";
    //myAlert.style.position = "absolute"; 
    //myAlert.style.top = "50%"; 
    //myAlert.style.left = "50%"; 
    //myAlert.style.marginTop = "-75px"; 
    //myAlert.style.marginLeft = "-150px";

    mybg = document.createElement("div");
    mybg.setAttribute("id", "mybg");
    mybg.style.background = "#000";
    mybg.style.width = "100%";
    //mybg.style.height = "100%"; 
    mybg.style.height = document.body.scrollHeight;
    mybg.style.position = "absolute";
    mybg.style.top = "0";
    mybg.style.left = "0";
    mybg.style.zIndex = "500";
    mybg.style.opacity = "0.3";
    mybg.style.filter = "Alpha(opacity=30)";
    document.body.appendChild(mybg);

    //document.body.style.overflow = "hidden"; 

    for (var i = 0; i < document.getElementsByTagName("select").length; i++) {
        var temp = document.getElementsByTagName("select")[i];
        document.getElementsByTagName("select")[i].style.display = 'none';
        //temp.disabled = true;
    }
}
/*
mClose.onclick = function() */
function disappear() {
    for (var i = 0; i < document.getElementsByTagName("select").length; i++) {
        //document.all.tags("select")[i].disabled = false;

        document.getElementsByTagName("select")[i].style.display = 'inline';
    }

    myAlert.style.display = "none";
    mybg.style.display = "none";
}