Download image after page load

Hi Folks,

Good day,

Am using image slider with click event using jquery. there are nearly

*When i opened the site, the 30 images are downloaded and then the site
opens. So that the page speed is very slow. *
My requirement is, The images are download only after site site opens.
I have tried lazyload jquery, but it is base on window scroll. I need
click event.

Please advice.

Thank You.