Open a querrystring! Need backup now!

Hey boys and girls!!

I need help now…

I have built a banner with a form and a button. I want that button to send the variabel to an url, like a querrystring.

on (release) {
getURL(“http://www.url.com/search.html=variabel”, “_blank”);
}

Solution???

Thankful for a quick reply!!

Best regards

//Andreas