You need to set the following CSS properties to the element you want to set position:
Set fixed position as : "position:fixed"
Set a high z index : Say, "z-index:1000"
Set left/right and top position : Say, "right:0px", "bottom:15px";
So, you can create a Css class as follows:
.cornerImage
{
position:fixed;
z-index:1000;
right:0px;
bottom:15px;
}
And, set the css class of your image as follows:
<img class="cornerImage" src="" id="" />