<?php
function FCKeditor_IsCompatibleBrowser(){
	if ( isset( $_SERVER ) ) {
		$sAgent = $_SERVER['HTTP_USER_AGENT'] ;
	}else {
		global $HTTP_SERVER_VARS ;
		if ( isset( $HTTP_SERVER_VARS ) ) {
			$sAgent = $HTTP_SERVER_VARS['HTTP_USER_AGENT'] ;
		}else{
			global $HTTP_USER_AGENT ;
			$sAgent = $HTTP_USER_AGENT ;
		}
	}

	if ( strpos($sAgent, 'MSIE') !== false && strpos($sAgent, 'mac') === false && strpos($sAgent, 'Opera') === false ){
		$iVersion = (float)substr($sAgent, strpos($sAgent, 'MSIE') + 5, 3) ;
		return ($iVersion >= 5.5) ;
	}else if ( strpos($sAgent, 'Gecko/') !== false ){
		$iVersion = (int)substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8) ;
		return ($iVersion >= 20030210) ;
	}else if ( strpos($sAgent, 'Opera/') !== false ){
		$fVersion = (float)substr($sAgent, strpos($sAgent, 'Opera/') + 6, 4) ;
		return ($fVersion >= 9.5) ;
	}else if ( preg_match( "|AppleWebKit/(\d+)|i", $sAgent, $matches ) ){
		$iVersion = $matches[1] ;
		return ( $matches[1] >= 522 ) ;
	}
	else
		return false ;
}

if ( !function_exists('version_compare') || version_compare( phpversion(), '5', '<' ) )
	include_once( 'fckeditor_php4.php' ) ;
else
	include_once( 'fckeditor_php5.php' ) ;
