How to online designer creator?

http://www.tailorstore.com/pk/en/tailor-made-shirts

I want to create this kind of website where user can create shirts like this.

I am confused that is this javascript call on each design click right one shirt update?

if yes then how it is work? have they fix these small images开发者_如何转开发 position to long image?

like collor has fixed position on shirt (large image)

techanically i want to your suggestion how to achieve this task?

Easy answer is to keep each category of choice, (color, type etc.) in a Session or ViewState variable, then string them all together to create an image filename and place it in an image holder. An Ajax UpdatePanel will achieve the effect created here. For example, if I click the white button then it stores

Session["Color"] = "white";

and sleeveless:

Session["Type"] = "sleeveless";

Then I can return a display image of 'white-sleeveless.jpg' by combining them.