W3speedster Pre Start Optimization

Function:	w3SpeedsterPreStartOptimization
Description:	Modify page content pre optimization.
Parameter:	$html = Content visible in pages view source.
Return:	1 – Reflect the changes done in html of the page.

function w3SpeedsterPreStartOptimization($html){
$html = str_replace('Existing content','Changed content',$html);
return $html;
}

function w3SpeedsterPreStartOptimization($html){
$html = str_replace('Existing content','Changed content',$html);
return $html;
}