Bug 198239 Memory leak using script and also localized strings
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/script/ScriptHandler.java
{
					javaScriptFunctionNamesCache = null;
				}
			}
			catch ( RhinoException jsx )
			{
				throw convertException( jsx );
			}
			finally
			{
				Context.exit( );
			}
		}
	}
	/**
	 * Sets the context object of current script handler.
	 * 
	 * @param csc
	 */
	public void setScriptContext( IChartScriptContext csc )
	{
		this.csc = csc;
	}
	/**
	 * Converts general exception to more readable format.
	 * 
	 * @param ex
	 * @return
	 */
	protected ChartException convertException( Exception ex )