/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*/dojo.provide("dojo.a11y");dojo.require("dojo.uri.*");dojo.require("dojo.html.common");dojo.a11y = {imgPath:dojo.uri.moduleUri("dojo.widget", "templates/images"), doAccessibleCheck:true, accessible:null, checkAccessible:function () {	if (this.accessible === null) {		this.accessible = false;		if (this.doAccessibleCheck == true) {			this.accessible = this.testAccessible();		}	}	return this.accessible;}, testAccessible:function () {	this.accessible = false;	if (dojo.render.html.ie || dojo.render.html.mozilla) {		var div = document.createElement("div");		div.style.backgroundImage = "url(\"" + this.imgPath + "/tab_close.gif\")";		dojo.body().appendChild(div);		var bkImg = null;		if (window.getComputedStyle) {			var cStyle = getComputedStyle(div, "");			bkImg = cStyle.getPropertyValue("background-image");		} else {			bkImg = div.currentStyle.backgroundImage;		}		var bUseImgElem = false;		if (bkImg != null && (bkImg == "none" || bkImg == "url(invalid-url:)")) {			this.accessible = true;		}		dojo.body().removeChild(div);	}	return this.accessible;}, setCheckAccessible:function (bTest) {	this.doAccessibleCheck = bTest;}, setAccessibleMode:function () {	if (this.accessible === null) {		if (this.checkAccessible()) {			dojo.render.html.prefixes.unshift("a11y");		}	}	return this.accessible;}};