var Flash = new Object();

Flash.hasVersion = function (requiredVersion) {
	requiredVersion = parseInt (requiredVersion);
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		var version = 0;
		var plugin = navigator.plugins["Shockwave Flash"];
		if (typeof plugin == "object") {
			var description = plugin.description;
			version = parseInt (description.charAt (description.indexOf (".") - 1));
		}
		return (version >= requiredVersion) ? true : false;
	} else if (navigator.appVersion.indexOf ("Mac") == -1 && window.execScript) {
		Flash.hasVersion_result = false;
		for (var i = requiredVersion; i <= requiredVersion + 5 && Flash.hasVersion_result != true; i ++) {
			execScript ('on error resume next: Flash.hasVersion_result=IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.'+i+'"))','VBScript');
		}
		return Flash.hasVersion_result;
	}
	return null;
}

Flash.redirect = function (version, noFlashPage) {
	if (document.referrer.indexOf (noFlashPage) != -1) return;
	if (!this.hasVersion (version)) {
		window.location.href = noFlashPage;
	}
}

Flash.write = function (movie, version, width, height, bgcolor, image, alt) {
	if (this.hasVersion (version)) {
		var swf = '<object';
		swf += ' width="' + width + '"';
		swf += ' height="' + height + '"';
		swf += ' classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"';
		swf += ' codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + version + ',0,0,0">';
		swf += '<param name="movie" value="' + movie + '" />';
		swf += '<param name="wmode" value="window" />';
		if (bgcolor) swf += '<param name="bgcolor" value="' + bgcolor + '">';
		swf += '<param name="menu" value="false" />';
		swf += '<embed src="' + movie + '"';
		swf += ' width="' + width + '"';
		swf += ' height="' + height + '"'; 
		if (bgcolor) swf += ' bgcolor="' + bgcolor + '"';
		swf += ' menu="false"';
		swf += ' type="application/x-shockwave-flash"';
		swf += ' pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash">';
		swf += '<\/embed>';
		swf += '<\/object>';
		document.write (swf);
	} else {
		document.write ('<a href="http://www.macromedia.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" target="_blank"><img src="images/no_flash.jpg" alt="Please install Macromedia Flash player" width="820" height="530" title="Please install Macromedia Flash Player" /></a>');
	}
}