Bug 147407 Preview the attached report in the web viewer first time and then click the TOC button will cause NPE error
Description: It just can be reprouduced at first time preview. Step to reproduce: 1. please use attach report file 2. preview it in the web viewer 3. click the "Toggle table of contents" button Actual result: As the atteched screenshot shows,There is a NPE error.And if you preview it in the Web viewer again, the phenomenon is disappear.But reopen the eclipse and preview it at first time, it will be occured.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
sbHtmlEncoded.append( "&#32;" ); 
					break;
				case '"' :
					sbHtmlEncoded.append( "&#34;" ); 
					break;
				case '\'' :
					sbHtmlEncoded.append( "&#39;" ); 
					break;
				case '<' :
					sbHtmlEncoded.append( "&#60;" ); 
					break;
				case '>' :
					sbHtmlEncoded.append( "&#62;" ); 
					break;
				case '`' :
					sbHtmlEncoded.append( "&#96;" ); 
					break;
				case '&' :
					sbHtmlEncoded.append( "&#38;" ); 
					break;
				default :
					sbHtmlEncoded.append( c );
			}
		}
		sHtmlEncoded = sbHtmlEncoded.toString( );
		return sHtmlEncoded;
	}
	/**
	 * Initial the parameters class. Web.xml is in UTF-8 format. No need to do
	 * encoding convertion.