Passing Parameters II: Boilerplate Page

Here is the image you requested (see the explanation, below):

This page uses a JavaScript program to get the cookie that was set in the boilerplate-images2.asp page. This cookie contains the name of the full-size graphics file to load on this page. The script writes the appropriate <IMG> tag on-the-fly.

To set this up, you must do two things:

Add the following code between the </HEAD> and <BODY> tags:

<SCRIPT LANGUAGE = "JavaScript">
<!--
function GetCookie(name) {
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg)
            return GetCookieVal (j);
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break; 
        }
    return null;
}

function GetCookieVal (offset) {
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1)
        endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
}
//-->
</SCRIPT>

Insert the following code at the spot where you want the image to appear:

<SCRIPT LANGUAGE = "JavaScript">
<!--
//
// Get the cookie
//
var img = GetCookie("Image")
if (img != "") {    
    //
    // Write the <IMG> tag using the name of the graphics 
    // file (you may need to adjust the SRC text)
    //
    document.write('<IMG SRC="' + img + '">')
}
//-->
</SCRIPT>