function TakeMail()
{
    if ($get("ctl00_ctl00_ContentPlaceHolder1_txtEmail"))
    {
        if ($get("ctl00_ctl00_ContentPlaceHolder1_txtEmail").value == "")
        {
            alert("请输入您的E-mail！");
            $get("ctl00_ctl00_ContentPlaceHolder1_txtEmail").focus();
            return false;
        }
        else if (document.getElementById("ctl00_ctl00_ContentPlaceHolder1_txtEmail").value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1)
        {
            alert("您输入的E-mail格式不正确！");
            $get("ctl00_ctl00_ContentPlaceHolder1_txtEmail").focus();
            return false;
        }
        return true;
    }
    if ($get("ctl00_ContentPlaceHolder1_txtEmail"))
    {
        if ($get("ctl00_ContentPlaceHolder1_txtEmail").value == "")
        {
            alert("请输入您的E-mail！");
            $get("ctl00_ContentPlaceHolder1_txtEmail").focus();
            return false;
        }
        else if (document.getElementById("ctl00_ContentPlaceHolder1_txtEmail").value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1)
        {
            alert("您输入的E-mail格式不正确！");
            $get("ctl00_ContentPlaceHolder1_txtEmail").focus();
            return false;
        } return true;
    }

}
function MediaTab(divId, imageId)
{
    for (var i = 0; i < MediaIds.length; i++)
    {
        if (MediaIds[i] == divId)
        {
            document.getElementById(MediaIds[i] + "_A").style.backgroundImage = "url(images/" + imageId + ".gif)";
            document.getElementById(divId).style.display = "block";
        }
        else
        {
            document.getElementById(MediaIds[i] + "_A").style.backgroundImage = "url(images/" + imageId + "_.gif)";
            document.getElementById(MediaIds[i]).style.display = "none";
        }
    }
}
function Calendar(divId,liId)
{
    var items = ["ChinaJoy", "CGBC", "CGDC", "CGOC"];
    for (var i = 0; i < items.length; i++)
    {
        if ("div_" + items[i] == divId)
        {
            document.getElementById("div_" + items[i]).style.display = "block";
            document.getElementById("li_" + items[i]).className = 'HuiZhan'
        }
        else
        {
            document.getElementById("div_" + items[i]).style.display = "none";
            document.getElementById("li_" + items[i]).className = 'HuiZhan2'
        }  
    }
}

function Search()
{
    if ($get("txtKeyword").value == "")
    {
        alert("请输入您要查询的关键字！");
        return;
    }
    var items = document.getElementsByName("seaschType");
    var searchType;
    for (var i = 0; i < items.length; i++)
    {
        if (items[i].checked)
        {
            searchType = items[i].value;
        }
    }
    window.open("Search.aspx?c=" + escape(searchType) + "&k=" + escape($get("txtKeyword").value) + "&p=1");
}