Bug 135252 [Regression]Focus will lost when switching to script view
Steps to reproduce: 1.Select a data set 2.Click "Script" tab Expected result: Script view for the data set shows up Actual result: The focus on data set lost
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/ui/editors/pages/ReportScriptFormPage.java
* @see org.eclipse.ui.forms.editor.IFormPage#getPartControl()
	 */
	public Control getPartControl( )
	{
		return this.control;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.IFormPage#getId()
	 */
	public String getId( )
	{
		return ID;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl( Composite parent )
	{
		try
		{
			jsEditor.createPartControl( parent );
			Control[] children = parent.getChildren( );
			control = children[children.length - 1];
			
			if ( previouPage != null )
			{