/*	Unobtrusive Flash Objects (UFO) v1.01 <http://www.bobbyvandersluis.com/ufo/>

	Copyright 2005 Bobby van der Sluis

	This software is licensed under the CC-GNU LGPL <http://creativecommons.org/licenses/LGPL/2.1/>

	------------------------------

	v1.01 Fixed bug: Added missing quotes around attribute values

*/



var UFO = {

	requiredAttrParams: ["movie", "width", "height", "majorversion", "build"],

	optionalAttrEmb: ["name", "swliveconnect", "align"],

	optionalAttrObj: ["id", "align"],

	optionalAttrParams: ["play", "loop", "menu", "quality", "scale", "salign", "wmode", "bgcolor", "base", "flashvars", "devicefont", "allowscriptaccess"],

	

	create: function(FO, id) {

		UFO.setElementDisplay(id, "none");

		var loadfn = function() {

			if (UFO.hasRequiredAttrParams(FO) && UFO.hasFlashVersion(FO.majorversion, FO.build)) {

				UFO.writeFlashObject(FO, id);

			}

			UFO.setElementDisplay(id, "block");

		};

		UFO.addLoadEvent(loadfn);

	},



	setElementDisplay: function(id, display) {

		if (!document.createElement || !document.getElementsByTagName) return;

		var selector = "#" + id;

		var property = "display: " + display;

		var style = document.createElement("style");

		style.setAttribute("type", "text/css");

		style.setAttribute("media", "screen");

		document.getElementsByTagName("head")[0].appendChild(style);

		var agt = navigator.userAgent.toLowerCase(); 

		var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

		var is_win = (agt.indexOf("win") != -1);

		if (!(is_ie && is_win)) {

			var styles = document.getElementsByTagName("style");

			if (styles && styles.length > 0 && document.createTextNode) {

				var lastStyle = styles[styles.length - 1];

				var rule = document.createTextNode(selector + " {" + property + ";}");

				lastStyle.appendChild(rule); // Hopelessly bugs in IE/Win

			}

		}

		else if (document.styleSheets && document.styleSheets.length > 0) {

			var stylesheet = document.styleSheets[document.styleSheets.length - 1];

			if (typeof stylesheet.addRule == "object"){ // This test bugs in IE/Mac and Safari

				stylesheet.addRule(selector, property);

			}

		}

	},



	hasRequiredAttrParams: function(FO) {

		for (var i = 0; i < UFO.requiredAttrParams.length; i++) {

			if (typeof FO[UFO.requiredAttrParams[i]] == "undefined") return false;

		}

		return true;

	},

	

	hasFlashVersion: function(majorVersion, build) {

		var reqVersion = parseFloat(majorVersion + "." + build);

		if (navigator.plugins && typeof navigator.plugins["Shockwave Flash"] == "object") {

			var desc = navigator.plugins["Shockwave Flash"].description;

			if (desc) {

				var descArr = desc.split(" ");

				var majorArr = descArr[2].split(".");

				var major = majorArr[0];

				if (descArr[3] != "") {

					var minorArr = descArr[3].split("r");

				}

				else {

					var minorArr = descArr[4].split("r");

				}

				var minor = minorArr[1] > 0 ? minorArr[1] : 0;

				var flashVersion = parseFloat(major + "." + minor);

			}

		}

		else if (window.ActiveXObject) {

			try {

				var flash = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");

				var desc = flash.GetVariable("$version");

				if (desc) {

					var descArr = desc.split(" ");

					var versionArr = descArr[1].split(",");        

					var major = versionArr[0];

					var minor = versionArr[2];

					var flashVersion = parseFloat(major + "." + minor);

				}

			}

			catch(e) {}

		}

		if (typeof flashVersion != "undefined"){

			return (flashVersion >= reqVersion ? true : false); 

		}

		return false;

	},



	writeFlashObject: function(FO, id) {

		if (!document.getElementById) return;

		var el = document.getElementById(id);

		if (typeof el.innerHTML == "undefined") return;

		var embHTML = "";

		var objAttrHTML = "";

		var objParamHTML = "";

		for (var i = 0; i < UFO.optionalAttrEmb.length; i++) {

			if (typeof FO[UFO.optionalAttrEmb[i]] != "undefined" && FO[UFO.optionalAttrEmb[i]] != "") {

				embHTML += ' ' + UFO.optionalAttrEmb[i] + '="' + FO[UFO.optionalAttrEmb[i]] + '"';

			}

		}

		for (var i = 0; i < UFO.optionalAttrObj.length; i++) {

			if (typeof FO[UFO.optionalAttrObj[i]] != "undefined" && FO[UFO.optionalAttrObj[i]] != "") {

				objAttrHTML += ' ' + UFO.optionalAttrObj[i] + '="' + FO[UFO.optionalAttrObj[i]] + '"';

			}

		}

		for (var i = 0; i < UFO.optionalAttrParams.length; i++) {

			if (typeof FO[UFO.optionalAttrParams[i]] != "undefined" && FO[UFO.optionalAttrParams[i]] != "") {

				embHTML += ' ' + UFO.optionalAttrParams[i] + '="' + FO[UFO.optionalAttrParams[i]] + '"';

				objParamHTML += '<param name="' + UFO.optionalAttrParams[i] + '" value="' + FO[UFO.optionalAttrParams[i]] + '" />';

			}

		}

		if (navigator.plugins && typeof navigator.plugins["Shockwave Flash"] == "object") {

			var foHTML = '<embed type="application/x-shockwave-flash" src="' + FO.movie + '" width="' + FO.width + '" height="' + FO.height + '" pluginspage="http://www.macromedia.com/go/getflashplayer"';

			foHTML += embHTML;

			foHTML += '></embed>';

		}

		else {

			var foHTML = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' + objAttrHTML + ' width="' + FO.width + '" height="' + FO.height + '" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + FO.majorversion + ',0,' + FO.build + ',0">';

			foHTML += '<param name="movie" value="' + FO.movie + '" />';

			foHTML += objParamHTML;

			foHTML += '</object>';

		}

		el.innerHTML = foHTML;

	},



	addLoadEvent: function(fn) {

		if (window.addEventListener) {

			window.addEventListener("load", fn, false);

		}

		else if (document.addEventListener) {

			document.addEventListener("load", fn, false);

		}

		else if (window.attachEvent) {

			window.attachEvent("onload", fn);

		}

		else if (typeof window.onload == "function") {

			var fnOld = window.onload;

			window.onload = function(){

				fnOld();

				fn();

			};

		}

		else {

			window.onload = fn;

		}

	}

};