jemz -1 Master Poster

Hi,I put backgroundimage on my button and i set the button flatstyle to "pop-up" in the property window.why is that there is a thin black border in my button?but i want that my button has no border because i made an image that has a border already..and it is so obvious that i am using the button..is this possible to remove the border of my button.Like the form it has FormBorderStyle="none" it has no border that is exactly what i want for my button.I hope someone will help me on this.Thank you in advance.