how to pass values to the script

Hi ,

Basically I want to display a popup box only at a specific time in asp.net application. so i'm using the following code..

aspx page :

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<head runat="server">
    <title>Untitled Page</title>
    <script type="text/javascript">
function timedMsg()
{
var t=setTimeout("alert('good morning!')",6000);
}
script>
</head>

C# code :

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protected void Button1_Click(object sender, EventArgs e)
    {
        StringBuilder script = new StringBuilder();
        script.Append("<script type=\"text/javascript\">");
        script.Append("timedMsg();");
        script.Append("script>");
        Page.ClientScript.RegisterClientScriptBlock(typeof(object), "JavaScriptBlock", script.ToString());
    }

this works fine but i dont want to set settimeout as fixed as 6000. i need to retrieve value from database and assign it to settimeout. so i modified the coding as below..

aspx page :

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<head runat="server">
    <title>Untitled Page</title>
    <script type="text/javascript">
function timedMsg(var x)
{
var t=setTimeout("alert('I am displayed after 3 seconds!')",x);
}
script>
</head>

C# code :

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protected void Button1_Click(object sender, EventArgs e)
    {
        int x = 6000;
        StringBuilder script = new StringBuilder();
        script.Append("<script type=\"text/javascript\">");
        script.Append("timedMsg('"+x+"');");
        script.Append("script>");
        Page.ClientScript.RegisterClientScriptBlock(typeof(object), "JavaScriptBlock", script.ToString());
    }

but this code is not working. the alert box is not popping up. is this a correct method to pass values to the script?. or what else to be done to meet the requirement?.. pls help me..

thanks..