make bulb glow on/off on button click

Question

Hey users, i am currently making a webpage in which i am stuck in a problem. i have two images 1st is black and white and another 1 is coloured and these images are overlapping  each other,and a button which gets switch on and off.now i want that when i click on the button "on" the black and white image should get invisible,and when i click again the black n white image get visible again and 1 more important thing is that.(when we switch on the button and move to another page and then get back to the same page again,the coloured img should be visible.it should not get reset on page load )

Animesh Mishra · Answer

bharath thanks for your suggestion.but can you provide me the code?

Bharath Reddy · Answer

In button click make visible false for black and white images and store the status in cache. When you com back to page load check the status of cache and manage black and white images.