I want to select image depend on click event and that image should be displayed

I again explain you,what i want to do

I have placeholder control into aspx page.

I add 1 div tag into that placeholder from codebehind.ok.

then from database Image table I add image into that div tag..suppose I have 4 images into database table,then 4 images will added into div tag.

now in my aspx page 1 hardcoded image tag is there.

like<image id="imgshow" src=""/>

Now if i run this code,n if i select a particular image which is coming from database,then that particular image want to display into that hardcoded [imgshow] tag..

like imgshow.src="src of selected image from database."