wdvlTalk Roundup August 2002 Page 30

I just made a custom error page for my site. I have the option of adding all of these to the page, but I don't know which ones might be necessary:

<!--#echo var="HTTP_REFERER" -->
<!--#echo var="REMOTE_ADDR" -->
<!--#echo var="REQUEST_URI" -->
<!--#echo var="HTTP_HOST" -->
<!--#echo var="HTTP_USER_AGENT" -->
<!--#echo var="REDIRECT_STATUS" -->

• To go through them one by one:

  <!--#echo var="HTTP_REFERER" -->

  Address of the page the visitor was last looking at. Not sent by all browsers, but pretty reliable.

  <!--#echo var="REMOTE_ADDR" -->

  Remote IP address of the visitor. May contain the IP of their proxy if they're using one, in which case you need to check HTTP_X_FORWARDED_FOR.

  <!--#echo var="REQUEST_URI" -->

  URL of the visitor's request.

  <!--#echo var="HTTP_HOST" -->

  Server address - stick this in front of REQUEST_URI and you have a complete web address.

  <!--#echo var="HTTP_USER_AGENT" -->

  The browser that the visitor is using (looks like Netscape 4 on Windows 2000 in this case).

  <!--#echo var="REDIRECT_STATUS" -->

  HTTP error code showing why you were redirected here - in normal use you might find 301 or 302 (moved permanently or moved temporarily), but in this case it's our old friend 404 (not found).

  Like I said, you don't *need* to show any of this to the visitor, but if you have any server-side scripting it's quite helpful to write an error page that emails you this information whenever it gets triggered.

Hello, I'm trying to mimic frames on my personal website. I'm not sure if this is an HTML question, DHTML, CSS, or Javascript, so if I've found the wrong ng, please let me know.

• You should be able to do what you want with CSS. Find a CSS tutorial that covers CSS Positioning (such as http://www.scripterspad.com/dhtml/csspos.html) and you'll see you can set a div to be a certain height and width, with optional scrolling if the text overflows the size of the div

  <div style="position: absolute; left: 180; top: 0;
    overflow: auto">
  Text goes here
  </div>
  

• Let's take this concept a step farther. If the portion of your site that is intended to scroll is confined to the inner DIV with "overflow:auto", why not do away with the unsightly double scroll bar. If your content is designed to flow with the height of the screen and does not exceed the window size. We can get rid of the window scrollbar by assigning "overflow:hidden" to the body tag. Your site will have less clutter, and your design will look more intentional. This CSS tip will work in IE5.5, IE6, and NN6, Mozilla 1.0. Opera and NN4x do not support the "overflow:auto" property.

• When filled with text, a DIV will grow in height, if the content is greater than your height value for the DIV. If you set the width and height values of the DIV using CSS and don't want the DIV to expand in length, you can set the "overflow" property to; "auto"(hides content that extends below the bottom limit of the DIV and creates a vertical scrollbar only as needed.), "scroll"(hides excess content, and creates a vertical and horizontal scrollbar, whether you need them or not.), or "hidden" (hides all content that extends beyond the dimensions of the DIV, and displays no scrollbars.)

  To hide the browser window scrollbar, you can use CSS to set the overflow property of the body tag.

  <style type="text/css">
  
  body {background-color:#ffffff; margin:0; padding:0; border:0;
  overflow:hidden;}
  
  
  

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