IF a database picture field is empty

I have a news page with text and images inputted into a field from a form.  the trouble is that when i leave the forms blank the page outputs the box with the red cross. (i should add that i want the option to put a max of 5 images on there but when i dont want to use all 5 it comes up with red cross box)

Ive tried this and it doesnt work:

if rsCommon("picURL2")= "" or IsNull(rsCommon("picURL2")) then
    Response.Write "not available"
   else
    response.write("<img align=""left"" CLASS=""IMAGEBORDER"" src=""" & rsCommon("picURL2") & """ border=""0"">")
   end if

when i do this: Response.Write(IsNull(strpicURL2)) it returns False

How do I get this to work?

thanks for replying AnthraX

hmmm I actually solved it myself just now but i shall give this a go as less code!

I had to use trim which made it work ok.

thanks for helping a noob!