(20211231)_head_objectSwap.js

//Check if the browser is InternetExplorer, and if it supports the getElementById DOM method
var ie = (document.defaultCharset && document.getElementById && !window.home);
var opera9 = false;
if (ie){
	//Check for ie 5.5 and exclude it from the script
	var ver=navigator.appVersion.split("MSIE")
	ver=parseFloat(ver[1])
	ie = (ver >=6)
}else if (navigator.userAgent.indexOf("Opera")!=-1) {
	//Check for Opera9 and include it in the ObjectSwap
	var versionindex=navigator.userAgent.indexOf("Opera")+6
	if (parseInt(navigator.userAgent.charAt(versionindex))>=9)
	opera9 = true;
}
//Perform ObjectSwap if the browser is IE or Opera (if not just check flashVersion)
var oswap = (ie || opera9)

//Hide the object to prevent it from loading twice
if (oswap){
	document.write ("<style id='hideObject'> object{display:none;} </style>");
}

/*Replace all flash objects on the page with the same flash object, 
by rewriting the outerHTML values
This bypasses the new IE ActiveX object activation issue*/
objectSwap = function(){
	if (!document.getElementsByTagName){
		return;
	}
	//An array of ids for flash detection
	var stripQueue = [];
	//Get a list of all ActiveX objects
	var objects = document.getElementsByTagName('object');
	for (var i=0; i<objects.length; i++){			
		var o = objects[i];	
		var h = o.outerHTML;
		//The outer html omits the param tags, so we must retrieve and insert these separately
		var params = "";
		var hasFlash = true;
		for (var j = 0; j<o.childNodes.length; j++) {
			var p = o.childNodes[j];
			if (p.tagName == "PARAM"){
				//Check for version first - applies to all browsers
				//For this to work, a new param needs to be included in the object with the name "flashVersion" eg:
				//<param name="flashVersion" value="7" />
				if (p.name == "flashVersion"){
					hasFlash = detectFlash(p.value);
					if (!hasFlash){
						//Add the objects id to the list (create a new id if there's isn't one already)
						o.id = (o.id == "") ? ("stripFlash"+i) : o.id;
						stripQueue.push(o.id);
						break;
					}
				} 
				params += p.outerHTML;		       
			}
		}	
		if (!hasFlash){
			continue;
		}		
		//Only target internet explorer
		if (!oswap){
			continue;
		} 
		//Avoid specified objects, marked with a "noswap" classname
		if (o.className.toLowerCase().indexOf ("noswap") != -1){
			continue;
		}		
		//Get the tag and attributes part of the outer html of the object
		var tag = h.split(">")[0] + ">";			
		//Add up the various bits that comprise the object:
		//The tag with the attributes, the params and it's inner html
		var newObject = tag + params + o.innerHTML + " </OBJECT>";	
		//And rewrite the outer html of the tag 
		o.outerHTML = newObject;
	}
	//Strip flash objects
	if (stripQueue.length) {
		stripFlash(stripQueue)
	}
	//Make the objects visible again
	if (oswap){
		document.getElementById("hideObject").disabled = true;
	}
}

detectFlash = function(version){
	if(navigator.plugins && navigator.plugins.length){
		//Non-IE flash detection.
		var plugin = navigator.plugins["Shockwave Flash"];
		if (plugin == undefined){
			return false;
		}
		var ver = navigator.plugins["Shockwave Flash"].description.split(" ")[2];
		return (Number(ver) >= Number(version))
	} else if (ie && typeof (ActiveXObject) == "function"){
	//IE flash detection.
		try{
			var flash = new ActiveXObject("ShockwaveFlash.ShockwaveFlash." + version);
			return true;
		}
		catch(e){
			return false;
		}
	}
	//Catchall - skip detection
	return true;
}

//Loop through an array of ids to strip
//Replace the object by a div tag containing the same innerHTML.
//To display an alternative image, message for the user or a link to the flash installation page, place it inside the object tag.  
//For the usual object/embed pairs it needs to be enclosed in comments to hide from gecko based browsers.
stripFlash = function (stripQueue){
	if (!document.createElement){
		return;
	}
	for (var i=0; i<stripQueue.length; i++){
		var o = document.getElementById(stripQueue[i]);
		var newHTML = o.innerHTML;	
		//Strip the comments
		newHTML = newHTML.replace(/<!--\s/g, "");
		newHTML = newHTML.replace(/\s-->/g, "");
		//Neutralise the embed tag
		newHTML = newHTML.replace(/<embed/gi, "<span");		
		//Create a new div element with properties from the object
		var d = document.createElement("div");
		d.innerHTML = newHTML;
		d.className = o.className;
		d.id = o.id;
		//And swap the object with the new div
		o.parentNode.replaceChild(d, o);
	}
}

//Initiate the function without conflicting with the window.onload event of any preceding scripts
var tempFunc = window.onload;
window.onload = function(){
	if (typeof (tempFunc) == "function"){
		try{
			tempFunc();
		} catch(e){}
	}
	objectSwap();
}