<br />function strpos (haystack, needle, offset) {
var i = (haystack+'').indexOf(needle, (offset || 0));
return i === -1 ? false : i;
}

window.onload = function() {
pageurl = window.location;if(strpos(pageurl, '-f8', 5) !== false || strpos(pageurl, 'f=8', 5) !== false) {
output = 'Regras do Forum';
document.getElementById('main-content').innerHTML = output + document.getElementById('main-content').innerHTML;
}
}