Get URL variable on .asp page with ASP or JS

I need to retreive a URL variable on a .asp page using either ASP or JS and then put in into the URL of an img tag.

Example:
- The page we are looking at has URL "https://aaa.bbb.net/ccc.asp?var1=12345&var2=True&var3=hello"
- I need to use JS or ASP to build a tag "<IMG border=10 hspace=10 vspace=10 width=1 height=1 src="https://ddd.eee.com/fff.asp?vara=fixed&varb=fixed&varc=fixed&vard=12345&vare=fixed">"
- Basically, the value of var1 from the URL should be used as the value from vard in the img tag

Your help is appreciated.
Charles

not sure thisis what you want but

if your url is www.blah.com/index.asp?var1=1234

to get the info you would do

dim url_var
url_var = request.querystring("var1")

if you then wanted to put it back in the url you would then do

<a href="www.blahsomemore.com/index.asp?var1=<%= url_var %><img src="/imahe/blah.jpg")</a>

Somthing like that

Hope that helps sry if it doesn't