Bug 144402 Report title didn't appear on PDF
engine/org.eclipse.birt.report.engine.emitter.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFEmitter.java
private float layoutAreaY2PDF (int layoutY, int areaHeight)
	{
		return pageHeight - pdfMeasure(layoutY) - pdfMeasure(areaHeight);
	}
	
	/**
	 * convert the top Y coordinate of an Area from layout to the start Y coordinate in pdf. 
	 * to the bottom Y coordinate in PDF
	 * @param layoutY 				the Y coordinate specified from layout
	 * @param areaHeight			the height of the area whose coordinate need to be converted.
	 * 								To text area, the height is from the top of the text to
	 * 								the text's baseline.
	 * @param containerHeight		the height of the area's container 
	 * @return				the PDF Y coordinate
	 */
	private float layoutAreaY2PDFEx (int layoutY, int areaHeight, float containerHeight)
	{
		return containerHeight - pdfMeasure(layoutY) - pdfMeasure(areaHeight);
	}
    
	/**
	 * Set current area as a bookmark. 
	 * if current area does NOT contain any bookmark info,
	 * this method does nothing.
	 * 
	 * @param area			the area which may need to be marked. 
	 * @param curPos 		the position of the area's container relative to the page.
	 */
	private void makeBookmark(IArea area, ContainerPosition curPos) 
	{