Don't know if it's very clear so what i mean, it could be like this<body onload="ads()">
with script to control the display of ads :
<script type="text/javascript">
function ads() {
document.getElementById(ads ).style.display= block
}
</script>
In the header (or in the page) we could insert ad like this :
<div id="ads" style="display:none;">{ADS_1}</div> (display onload if javascript is activated)
<noscript>{ADS_1}</noscript> (display if javascript is désactivated)
some thing like this, but don't sure that will be stop the timeout
Another solution, could be use script to write directly in document after onload<div id="ads"></div> (display onload if javascript is activated)
<noscript>{ADS_1}</noscript> (display if javascript is désactivated)
And inject {ADS_1} in the div "ads" after onload (instead of display none)
Another way would be to detect with php if script is activated, and activate {ADS_1} after onload <div id="ads">{ADS_1}</div> (display onload if javascript is activated)
<noscript>{ADS_2}</noscript> (display if javascript is désactivated)
like this detection -http://www.inspirationbit.com/php-js-detection-of-javascript-browser-settings/
Another way could be to use css put the part of code of advert at the end of body, and diplay by css at the top in header, would be not easier with phpbb structure
I continue searching in these way, it really could be a great feature, and finally display the adverts regardless of if javascript is activated or no, but if it's activated it would be after onload
