var hasRightVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
if(hasRightVersion) {  // if we've detected an acceptable version
    document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" id="flashnav" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0" width="662" height="25">');
	document.write('<param name="movie" value="nav1.swf?startposition='+startPosition+'">');
	document.write('<param name="wmode" value="transparent" />');
	document.write('<param name="quality" value="high">');
	document.write('<param name="SCALE" value="exactfit"><param name="BGCOLOR" value="#000000">');
	document.write('<embed src="nav1.swf?startposition='+startPosition+'"  wmode="transparent" width="662" height="25" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" scale="exactfit" bgcolor="#000000"></embed></object>');
} else {  // flash is too old or we can't detect the plugin
    var alternateContent = '<div id="b1" onmouseover="bOver(\'b1\')" onmouseout="bOut(\'b1\')"><a href="index.php">The company</a></div>';
	alternateContent += '<div id="b2" onmouseover="bOver(\'b2\')" onmouseout="bOut(\'b2\')"><a href="services.php">Client services</a></div>';
	alternateContent += '<div id="b3" onmouseover="bOver(\'b3\')" onmouseout="bOut(\'b3\')"><a href="contractors.php">Contractor services</a></div>';
	alternateContent += '<div id="b4" onmouseover="bOver(\'b4\')" onmouseout="bOut(\'b4\')"><a href="staff.php">Staff news</a></div>';
    document.write(alternateContent);  // insert non-flash content
}