Adding a loader into your webpage and customizing its appearance is easy and useful. An eMarketer research shows that half the internet users leave a website if theyhave to wait more that 15 seconds for a page to be completely loaded. This is worse when the whole structure of your website is contained into tables making the page totally blank till the tables are loaded completely. The users may think the website is not available. Adding visual information in the screen telling the user that the page is loading will prevent of these leaving.