/*
Writes out OBJECT and EMBED tags for Macromedia Flash
src       : Path, relative to the page, of the SWF
w         : Width of the flash object
h         : Height of the flash object
version   : Major version of the Flash Player required
flashvars : Any FlashVars that are needed for the movie. Not used often except for video clips usually.
title     : Alt/Title text for the flash movie
*/
function writeFlash(src,w,h,version,flashvars,title){
	document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + version + ',0,0,0" width="' + w + '" height="' + h + '" align="middle" title="' + title + '">' + 
  		'<param name="movie" value="' + src + '" />' +
  		'<param name="quality" value="high" />' +
  		'<param name="FlashVars" value="' + flashvars + '" />' +
  		'<embed src="' + src + '" width="' + w + '"  height="' + h + '" align="middle" flashvars="' + flashvars + '" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"></embed>' + 
		'</object>');
}
/*
Detects if the supplied flash version is installed and if so write the flash embedding code, otherwise outputs supplied backup image.
src       : Path, relative to the page, of the SWF
w         : Width of the flash object
h         : Height of the flash object
vMaj      : Major version of the Flash Player required
vMin      : Minor version of the Flash Player required, usually zero
vRev      : Revision of the Flash Player required, usually zero
flashvars : Any FlashVars that are needed for the movie. Not used often except for video clips usually.
title     : Alt/Title text for the flash movie
backup    : Path, relative to the page, of the backup image to display if the proper version of Flash isn't installed
*/
function detectAndWriteFlash(src,w,h,vMaj,vMin,vRev,flashvars,title,backup){
	if(DetectFlashVer(vMaj,vMin,vRev))
		writeFlash(src,w,h,vMaj,flashvars,title);
	else
		document.write('<img src="' + backup + '" height="' + h + '" width="' + w + '" alt="' + title + '" title="' + title + '" />');
}

var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;

// JavaScript helper required to detect Flash Player PlugIn version information
function JSGetSwfVer(i){
	// NS/Opera version >= 3 check for Flash plugin in plugin array
	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
      		var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
			descArray = flashDescription.split(" ");
			tempArrayMajor = descArray[2].split(".");
			versionMajor = tempArrayMajor[0];
			versionMinor = tempArrayMajor[1];
			if ( descArray[3] != "" ) {
				tempArrayMinor = descArray[3].split("r");
			} else {
				tempArrayMinor = descArray[4].split("r");
			}
      		versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
            flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
      	} else {
			flashVer = -1;
		}
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	// Can't detect in all other cases
	else {
		
		flashVer = -1;
	}
	return flashVer;
} 
// If called with no parameters this function returns a floating point value 
// which should be the version of the Flash Player or 0.0 
// ex: Flash Player 7r14 returns 7.14
// If called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision) 
{
 	reqVer = parseFloat(reqMajorVer + "." + reqRevision);
   	// loop backwards through the versions until we find the newest version	
	for (i=25;i>0;i--) {	
		if (isIE && isWin && !isOpera) {
			versionStr = VBGetSwfVer(i);
		} else {
			versionStr = JSGetSwfVer(i);		
		}
		if (versionStr == -1 ) { 
			return false;
		} else if (versionStr != 0) {
			if(isIE && isWin && !isOpera) {
				tempArray         = versionStr.split(" ");
				tempString        = tempArray[1];
				versionArray      = tempString .split(",");				
			} else {
				versionArray      = versionStr.split(".");
			}
			versionMajor      = versionArray[0];
			versionMinor      = versionArray[1];
			versionRevision   = versionArray[2];
			
			versionString     = versionMajor + "." + versionRevision;   // 7.0r24 == 7.24
			versionNum        = parseFloat(versionString);
        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
			if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
				return true;
			} else {
				return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );	
			}
		}
	}	
	return (reqVer ? false : 0.0);
}