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Most CPM ad network need publishers place ads code display within first 600-800 pixels on the pages, but how do they detect whether their ads are displayed within the area as they asked? Which code they use? in JavaScript? in PHP?Thanks

Ads make by ad engine on server...

Javascript ads add an underline to normal text by altering the style of the text, probably by putting a <span> around the keyword.

Would you like to tell me how do javascript ads code add underline to normal text?Tnanks!

You'd have a paragraph of plain text like:Then you'd use a javascript code to cycle through each word in the text, check if it was one of your ad "keywords", if so, underline it and add a code sayonmouseover="show_advert(this)";with your function creating a floating div that hovers near your word with the advert inside.Obviously that's a fully javascript solution, mostly the first bit of the ads code will be done by the server, with just the show_advert function done client side.

Thanks!But I still don't get idea about in-text ad implement.. how do it make the underline over the normal text by addon javascript code?

Hi, I am new here, and this is my first post.I am new to JavaScript, but I really need to get a idea about their implement now.. I have post that on other forums but no one tell me anything...How do these javascript ad code work on client-side(no matter about server-side)? I know:1. Inline: use <iframe>?2. Layer: use <div>?3. Pop-Up: ?4. Pop-Under: ?5. Interstitial: what is it?6. In-Text: no idea?7. Link: use php fopen?I will be very grateful if you can make me some ideas.Thanks