How to do a rollover with dynamic loading images.

Hello!,

I am trying to figure out How do do a rollover with dynamic loading images.
I load a certain image based on the barcode in the database. it loads the images corresponding to the barcode until EOF.
static is no problem, I use onrollover(). but is it the same with dynamic loading images.?

"<img height=""70"" src=""mypath/mypath/mypath/" & barcode & ".jpg"" onError=""this.src='path/error.gif'"" onClick=""secondwindow('"&barcode&"')"">" & _ "

where in this should the onrollover go?

should I also use a function maybe something like
function myrollover(){
cont = false
}


any enlightenment would be great!

Thanks in advance,

Korelian.