Need to have a bit more details.
Question 1: are you creating a BBC article or a HTML article?
Question 2: where are you getting the image link from that you insert?
You are mentioning that you upload images, so you are using the 'My images Quicklist', right? The quicklist will show small images of the uploaded files.
With the quicklist you can actually 'drag and drop' the images into your article: that will link to the full image automatically...
What you can also do is copy the quicklist image url, open the 'Insert Image' dialog and paste the link there...
If I check your site, you have 'somehow' managed to not only include the image link in the article but also the div elements that enclose the quicklist!
So question 2 is most important. In the "URL" field for Create image the only code inserted should be this: "http://www.ecotec2000.de/forum/tp-images/1uidA1.jpg