Advance image settings plugin?!

Hi,

On one of my websites I have a plugin that allows me to click on a picture in a edit post/page box and it displays a little picture of a mountain and then next to that a circle with a line through it to delete it. When you click on the little mountain box you have advanced image settings where you can change Alignment, edit Image Title, Edit Alternate Text, Edit Image Caption, Link URL change size and on another tab chnage the link, size, border etc. Does anyone know what plugin this is?
Thanks in advance!